This document provides an overview of Bluetooth wireless technology (BWT), including how it works, network topologies, security features, and how to establish connections between BWT devices like notebooks, PDAs, printers, and phones. It explains that BWT uses short-range radio frequencies to wirelessly connect multiple devices without cables, allows devices from different manufacturers to communicate, and eliminates the need for proprietary connections. The document also describes activating and setting up BWT on various devices, selecting available services (profiles), and pairing devices for secure connections.
This document provides information about extranets and communication devices and their hardware requirements. It discusses:
1) What an extranet is, how it originated in the late 1990s/early 2000s, and how it allows authorized parties like customers and affiliates external access to a company's website.
2) Examples of communication devices like network interface cards, wireless network cards, modems, hubs/switches, routers, and wireless access points that enable computers to communicate over a network.
3) Requirements for communication devices including different types of network cards, modems, how hubs/switches and routers function, and that wireless access points use antennas to transfer information wirelessly.
Bluetooth is an open wireless technology standard used for exchanging data over short distances between devices like phones, laptops, desktops, headphones, home electronics and more. Devices can form ad-hoc networks called piconets to connect and exchange information without cables. The Bluetooth specifications are developed by the Bluetooth Special Interest Group to provide a universal standard for wireless personal area networks.
This chapter discusses computer communications and networks. It describes the components needed for successful communications including sending and receiving devices, communications software, and transmission media. Various network types such as LANs, WANs, intranets and extranets are defined. Common network devices like routers, hubs, switches and wireless access points are explained. Both physical wired media like twisted pair and fiber optic cables and wireless transmission media are covered. Network standards including Ethernet, TCP/IP, Wi-Fi, Bluetooth and others are also outlined.
The document discusses computer networks and communications. It defines a computer network as a system that connects interconnected computers and devices to share information and resources. It describes the different types of networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It also explains the basic components, hardware, and software needed for networks and communications to function properly.
Global System for Mobile Communication Based Smart Home Security SystemIJERA Editor
Home security system is needed for occupants' convenience and safety. In this paper, we present the design and implementation of an affordable, low power consumption, and GSM (Global System for Mobile Communication) based wireless home security system. In existing system, the home network is engaged with non-wireless technology, where the installation and maintenance is difficult. So the system cost is very high. In our proposed system, these difficulties are overcome by introducing a wireless home network which contains a GPRS Gateway and three kinds of security nodes namely door security node, anti intrusion node and SMS node to inform the user. The nodes are easy installing. All the three nodes are connected to the microcontroller.
This user manual provides instructions for setting up and using the ZiLog device. It describes the device's features and components, how to configure network and web settings, install and use the accompanying PC program, and specifies technical details. The manual is divided into sections covering an introduction to the device, descriptions of its parts, setup instructions, PC program usage, main features, upgrading, and specifications.
The document discusses various hardware devices used in network communications. A Network Interface Card (NIC) allows a computer to communicate over a network and access the network. A Wireless Network Interface Card (WNIC) provides wireless data transmission over a radio network. An internal modem is built into a stand-alone computer to transmit data over phone or cable lines, while an external modem is separate from the computer and mobile. A switch establishes connections between devices that want to communicate, and a hub contains multiple ports to connect LAN segments. A router connects multiple computers or routers and transfers data packets between networks, and a wireless access point connects wireless devices to form a wireless network and relay data to a wired network.
IRJET- Review on IoT based Dual ARM Tele-Robotic SystemIRJET Journal
This document reviews an IoT-based dual arm tele-robotic system for pick and place operations and online video streaming. It discusses designing a robot gripper for precision pick and place applications. An IoT-embedded control system would allow remote control of the robotic arms as well as video surveillance of remote areas. The system aims to develop a dual arm tele-robot for pick and place operations and online video streaming to identify and retrieve objects from a distance.
This document provides information about extranets and communication devices and their hardware requirements. It discusses:
1) What an extranet is, how it originated in the late 1990s/early 2000s, and how it allows authorized parties like customers and affiliates external access to a company's website.
2) Examples of communication devices like network interface cards, wireless network cards, modems, hubs/switches, routers, and wireless access points that enable computers to communicate over a network.
3) Requirements for communication devices including different types of network cards, modems, how hubs/switches and routers function, and that wireless access points use antennas to transfer information wirelessly.
Bluetooth is an open wireless technology standard used for exchanging data over short distances between devices like phones, laptops, desktops, headphones, home electronics and more. Devices can form ad-hoc networks called piconets to connect and exchange information without cables. The Bluetooth specifications are developed by the Bluetooth Special Interest Group to provide a universal standard for wireless personal area networks.
This chapter discusses computer communications and networks. It describes the components needed for successful communications including sending and receiving devices, communications software, and transmission media. Various network types such as LANs, WANs, intranets and extranets are defined. Common network devices like routers, hubs, switches and wireless access points are explained. Both physical wired media like twisted pair and fiber optic cables and wireless transmission media are covered. Network standards including Ethernet, TCP/IP, Wi-Fi, Bluetooth and others are also outlined.
The document discusses computer networks and communications. It defines a computer network as a system that connects interconnected computers and devices to share information and resources. It describes the different types of networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It also explains the basic components, hardware, and software needed for networks and communications to function properly.
Global System for Mobile Communication Based Smart Home Security SystemIJERA Editor
Home security system is needed for occupants' convenience and safety. In this paper, we present the design and implementation of an affordable, low power consumption, and GSM (Global System for Mobile Communication) based wireless home security system. In existing system, the home network is engaged with non-wireless technology, where the installation and maintenance is difficult. So the system cost is very high. In our proposed system, these difficulties are overcome by introducing a wireless home network which contains a GPRS Gateway and three kinds of security nodes namely door security node, anti intrusion node and SMS node to inform the user. The nodes are easy installing. All the three nodes are connected to the microcontroller.
This user manual provides instructions for setting up and using the ZiLog device. It describes the device's features and components, how to configure network and web settings, install and use the accompanying PC program, and specifies technical details. The manual is divided into sections covering an introduction to the device, descriptions of its parts, setup instructions, PC program usage, main features, upgrading, and specifications.
The document discusses various hardware devices used in network communications. A Network Interface Card (NIC) allows a computer to communicate over a network and access the network. A Wireless Network Interface Card (WNIC) provides wireless data transmission over a radio network. An internal modem is built into a stand-alone computer to transmit data over phone or cable lines, while an external modem is separate from the computer and mobile. A switch establishes connections between devices that want to communicate, and a hub contains multiple ports to connect LAN segments. A router connects multiple computers or routers and transfers data packets between networks, and a wireless access point connects wireless devices to form a wireless network and relay data to a wired network.
IRJET- Review on IoT based Dual ARM Tele-Robotic SystemIRJET Journal
This document reviews an IoT-based dual arm tele-robotic system for pick and place operations and online video streaming. It discusses designing a robot gripper for precision pick and place applications. An IoT-embedded control system would allow remote control of the robotic arms as well as video surveillance of remote areas. The system aims to develop a dual arm tele-robot for pick and place operations and online video streaming to identify and retrieve objects from a distance.
This document analyzes security aspects of Near Field Communication (NFC). It discusses NFC communication modes, applications, and potential threats. The main threats discussed are:
1. Eavesdropping, as NFC uses wireless communication and an attacker can receive signals from up to 10 meters away when devices are in active mode and 1 meter away in passive mode.
2. Data modification, which is possible for some bits when 100% amplitude shift keying is used, and for all bits when 10% amplitude shift keying is used.
3. Man-in-the-middle attacks, where an attacker can intercept communications between two devices and establish separate key agreements with each.
Secure Routing for MANET in Adversarial EnvironmentIJCERT
Collection of mobile nodes is known as ad-hoc network in which wireless communication is used to connect these mobile nodes. A major requirement on the MANET is to provide unidentifiability and unlinkability for mobile nodes. There are various secure routing protocols have been proposed, but the requirement is not satisfied. The existing protocols are unguarded to the attacks of fake routing packets or denial-of-service broadcasting, even the node identities are protected by pseudonyms. We propose a new secure routing protocol which provides anonymity named as authenticated anonymous secure routing (AASR), to satisfy the requirement of mobile networks and defend the attacks. The route request packets are authenticated by a group signature and public key infrastructure, to defend the potential attacks without exposing the node identities. The cocept of key-encrypted onion routing which provides a route secret verification message, to prevent intermediate nodes from inferring a real destination. Simulation results have demonstrated the effectiveness of the proposed AASR protocol with improved performance as compared to the existing protocols.
IJCER (www.ijceronline.com) International Journal of computational Engineerin...ijceronline
This document summarizes a GSM modem-based data acquisition system. The system uses an AVR microcontroller and 8-channel ADC to continuously monitor sensors for parameters like temperature, rainfall, and humidity. It sends the sensor data via SMS to a mobile number every 10 minutes using a GSM modem connected to the microcontroller. The received data is stored on a PC database. The system allows remote monitoring of processes from distant locations without site visits. It can be used in industries and home automation for applications like monitoring and control.
Bluetooth Based Automatic Hotel Service System Using PythonIOSR Journals
This document describes a Bluetooth-based automatic hotel service system implemented using Python. The system uses Bluetooth to track hotel employees and provide services to customers. It aims to reduce costs for hotels by automating services. The system scans Bluetooth devices to authenticate employees accessing different departments and records employee entry/exit times. Customers are provided Bluetooth devices at check-in to access food ordering and room services. The system was tested and able to track employees and provide services to customers as intended. Future work could improve security and performance.
The key points are:
- An extranet extends a company's intranet to external users like suppliers, vendors or customers.
- It allows controlled access to a company's network and data by selected external users for business purposes.
- Extranets use internet protocols and security measures to securely share information with partners and suppliers while keeping internal data private.
- They enable collaboration and information sharing for joint projects or distribution purposes in a secure manner.
In summary, an extranet extends a private intranet beyond the company firewall to allow partners and suppliers access to select data and applications for business collaboration while maintaining security and privacy of internal information.
IRJET- Review on RFID based Audio Tour Guide with NFC Monitoring FunctionIRJET Journal
This document summarizes a proposed RFID-based audio tour guide system with NFC monitoring functions. The system would use RFID tags embedded in locations and artifacts that transmit unique radio signals to a receiver held by tourists. The receiver would play relevant audio, text, or image files upon detecting signals to inform tourists. Additionally, each tourist group would be given a unique NFC tag, and rooms would have NFC tag readers. Detecting a tag with a reader would log the group's entry in a cloud-based database for monitoring tourist movements. The system aims to accurately deliver location-based information to tourists while maintaining logs of their locations through RFID and NFC technologies.
A novel password based mutual authentication technique for 4 g mobile communi...eSAT Publishing House
The document describes a proposed password-based mutual authentication technique for 4G mobile communications. The technique aims to authenticate both the subscriber and network using the subscriber's password. It involves four phases: subscriber enrollment where the subscriber chooses an ID and password which are stored on their SIM card; subscriber authentication which occurs during each connection attempt where the subscriber provides their ID and password for verification; network authentication where the network also verifies itself to the subscriber; and a password change phase where the subscriber can update their password without server involvement. The proposed technique is claimed to provide advantages such as minimizing computation, preventing multiple SIMs with the same ID, and not requiring storage of ID/password on the server.
The latest development networks and communications (Microsoft Word)ainizbahari97
1. The document describes various topics related to computer networks and communications technologies. It discusses mobile computing technologies like wearable computers and smartphones. It also covers networking topics such as personal area networks (PANs), virtual private networks (VPNs), wireless local area networks (WLANs), and WiMAX. Finally, it discusses internet technologies including voice over internet protocol (VoIP) and blogs.
The latest development in network and communicationMuhd Airil
This document defines and describes various types of computer networks and communication technologies. It begins by defining a computer network as a collection of interconnected devices that allows sharing of resources and information. It then discusses mobile computing and specifies the features of mobile devices like smartphones. The document also describes Internet technologies like VoIP and blogs. It explains different network types such as PAN, VPN, WLAN, and WiMAX. It concludes that computer networks have greatly benefited various fields by connecting people worldwide.
IRJET- Wireless Sensor Network Based Internet of things for Environmental...IRJET Journal
This document describes a wireless sensor network system using Internet of Things technology for environmental impact analysis. The system uses low-cost sensors and Raspberry Pi, Arduino, and XBee modules to monitor environmental conditions like temperature and humidity from different locations. Sensor data is sent to the Raspberry Pi base station via a ZigBee wireless protocol and stored. The data can be accessed remotely through a web interface to monitor and control the system. The system provides a low-cost way to wirelessly monitor the environment in real-time.
This document summarizes a presentation about Bluetooth security mechanisms. It discusses Bluetooth technology standards and features, security mechanisms like frequency hopping and encryption, weaknesses like easy scanning and weak PINs, known attacks like Bluejacking and bluesnarfing, and recommendations to improve security like using a strong PIN and turning off Bluetooth when not in use. The presentation provides an overview of Bluetooth security risks and best practices.
PPT on Bluetooth Based Wireless Sensor NetworksSiya Agarwal
Bluetooth wireless sensor networks can be implemented using Bluetooth technology. Smart sensor nodes equipped with sensors, microprocessors and Bluetooth communication interface can collect data and transmit it to a gateway node. The network involves discovering Bluetooth devices, establishing connections and exchanging data. Algorithms are used for initialization, discovery, parameter setting and data transfer between nodes. While Bluetooth provides benefits like being wireless and inexpensive, it also has limitations such as average data rates and security risks.
Iaetsd bluetooth based smart sensor networksIaetsd Iaetsd
This document discusses Bluetooth-based smart sensor networks. It begins by introducing wireless sensor networks and their components. It then provides background on Bluetooth, describing how it operates using frequency hopping spread spectrum in the 2.4GHz band. The document outlines Bluetooth network structures, including piconets and scatternets. It discusses implementing a smart sensor network with Bluetooth, including smart sensor node architecture and discovery of sensor nodes by the gateway. The document concludes that Bluetooth represents an opportunity for wireless sensor network architectures in industrial and home applications by reducing wiring costs and integrating environments.
The document provides information on data, information, and information systems. It defines data as raw unorganized material that has little value on its own. Information is organized data that is meaningful to a user. An information system is a set of related components that collects data, processes it, and provides information. It gives examples of information systems used in education like learning management systems, and information systems used in business for online shopping, transportation, and hotel booking.
NEAR FIELD COMMUNICATION (NFC) TECHNOLOGY: A SURVEY IJCI JOURNAL
Near Field Communication, NFC- is one of the latest
short range wireless communication technologies.
NFC provides safe communication between electronic
gadgets. NFC-enabled devices can just be pointed or
touched by the users of their devices to other NFC-
enabled devices to communicate with them. With NFC
technology, communication is established when an NF
C-compatible device is brought within a few
centimetres of another i.e. around 20 cm theoretica
lly (4cm is practical). The immense benefit of the
short
transmission range is that it prevents eavesdroppin
g on NFC-enabled dealings. NFC technology enables
several innovative usage scenarios for mobile devic
es. NFC technology works on the basis of RFID
technology which uses magnetic field induction to c
ommence communication between electronic devices in
close vicinity. NFC operates at 13.56MHz and has 42
4kbps maximum data transfer rate. NFC is
complementary to Bluetooth and 802.11 with their lo
ng distance capabilities. In card emulation mode NF
C
devices can offer contactless/wireless smart card s
tandard. This technology enables smart phones to
replace traditional plastic cards for the purpose o
f ticketing, payment, etc. Sharing (share files bet
ween
phones), service discovery i.e. get information by
touching smart phones etc. are other possible
applications of NFC using smart phones. This paper
provides an overview of NFC technology in a detaile
d
manner including working principle, transmission de
tails, protocols and standards, application scenari
os,
future market, security standards and vendor’s chip
sets which are available for this standard. This
comprehensive survey should serve as a useful guide
for students, researchers and academicians who are
interested in NFC Technology and its applications [
1].
This document provides information about different types of physical transmission media. It discusses three main types of cables used for physical transmission: twisted-pair cable, coaxial cable, and fiber optic cable. Twisted-pair cable consists of two insulated copper wires twisted together, which helps cancel out electromagnetic interference. Coaxial cable contains a central conducting core surrounded by a metal shield. Fiber optic cable uses glass fibers to transmit data via laser signals. The document also mentions that cables are a common physical transmission medium used in Ethernet and token ring local area networks.
Design and implement a smart system to detect intruders and firing using IoT IJECEIAES
The security system is essential for occupants' convenience and protection from intruders and fire. Theft and fire are the most important requirement for the security system. The advancement of wireless sensor networks using IoTs increased the features in a security system and play an important role in daily life. In this paper, the proposed system is divided into two units. The first one about security which use to take snapshots by a camera whenever there is fire or intruders in the security zone and mail it to the owner every three seconds by using Arduino configured with MATLAB program. MATLAB program plays the main role to coordinate between sensors and to turn on/off the cameras. The second unit is about controlling the appliances and also the main door by using AVR microcontroller configured by CVAVR software that connected with Bluetooth sensor and controlled by a smartphone by using the implementation software built-up in the smartphone. To arrival of the control unit, the user should send code from the software implementation to the framework that use to turn on/off the devices or open/close the door. This proposed system is designed and implemented in details in this paper.
Bluetooth is a wireless technology standard that allows short-range transmission of data between devices like mobile phones, laptops, and wireless speakers. It uses radio waves in the unlicensed ISM band from 2.4-2.4835 GHz and employs frequency hopping to reduce interference. Bluetooth devices can connect to each other dynamically in a personal area network of up to 7 devices within 10 meters. Security features protect data transmission between trusted and untrusted devices.
Bluetooth is a wireless technology standard for exchanging data over short distances. It was created in 1994 and named after the Viking king Harald Bluetooth who united Denmark and Norway. Bluetooth uses short-wavelength UHF radio waves in the industrial, scientific and medical (ISM) band from 2.4 to 2.485 GHz to enable communication between devices like computers, phones and wireless accessories. It allows up to seven devices to connect in a personal area network (PAN) called a piconet, with one device acting as the master that the others connect to as slaves. Bluetooth provides wireless alternatives to wires and cables through frequency hopping spread spectrum (FHSS) technology which changes the transmission frequency many times per second, distributing the
Bluetooth is a wireless technology standard for exchanging data over short distances. It allows many types of digital devices to connect easily and quickly without cables by creating small personal area networks. Bluetooth works using a radio technology called frequency-hopping spread spectrum that breaks up data being sent and transmits pieces of it on up to 79 bands from 2.4-2.4835 GHz. It defines protocols for devices to discover each other and establish connections to exchange data over the air. Bluetooth is gaining popularity and acceptance for enabling wireless connections between diverse devices from phones to laptops to peripherals. While offering advantages, it also raises some issues regarding interference, security, and reliability that require analysis.
This document analyzes security aspects of Near Field Communication (NFC). It discusses NFC communication modes, applications, and potential threats. The main threats discussed are:
1. Eavesdropping, as NFC uses wireless communication and an attacker can receive signals from up to 10 meters away when devices are in active mode and 1 meter away in passive mode.
2. Data modification, which is possible for some bits when 100% amplitude shift keying is used, and for all bits when 10% amplitude shift keying is used.
3. Man-in-the-middle attacks, where an attacker can intercept communications between two devices and establish separate key agreements with each.
Secure Routing for MANET in Adversarial EnvironmentIJCERT
Collection of mobile nodes is known as ad-hoc network in which wireless communication is used to connect these mobile nodes. A major requirement on the MANET is to provide unidentifiability and unlinkability for mobile nodes. There are various secure routing protocols have been proposed, but the requirement is not satisfied. The existing protocols are unguarded to the attacks of fake routing packets or denial-of-service broadcasting, even the node identities are protected by pseudonyms. We propose a new secure routing protocol which provides anonymity named as authenticated anonymous secure routing (AASR), to satisfy the requirement of mobile networks and defend the attacks. The route request packets are authenticated by a group signature and public key infrastructure, to defend the potential attacks without exposing the node identities. The cocept of key-encrypted onion routing which provides a route secret verification message, to prevent intermediate nodes from inferring a real destination. Simulation results have demonstrated the effectiveness of the proposed AASR protocol with improved performance as compared to the existing protocols.
IJCER (www.ijceronline.com) International Journal of computational Engineerin...ijceronline
This document summarizes a GSM modem-based data acquisition system. The system uses an AVR microcontroller and 8-channel ADC to continuously monitor sensors for parameters like temperature, rainfall, and humidity. It sends the sensor data via SMS to a mobile number every 10 minutes using a GSM modem connected to the microcontroller. The received data is stored on a PC database. The system allows remote monitoring of processes from distant locations without site visits. It can be used in industries and home automation for applications like monitoring and control.
Bluetooth Based Automatic Hotel Service System Using PythonIOSR Journals
This document describes a Bluetooth-based automatic hotel service system implemented using Python. The system uses Bluetooth to track hotel employees and provide services to customers. It aims to reduce costs for hotels by automating services. The system scans Bluetooth devices to authenticate employees accessing different departments and records employee entry/exit times. Customers are provided Bluetooth devices at check-in to access food ordering and room services. The system was tested and able to track employees and provide services to customers as intended. Future work could improve security and performance.
The key points are:
- An extranet extends a company's intranet to external users like suppliers, vendors or customers.
- It allows controlled access to a company's network and data by selected external users for business purposes.
- Extranets use internet protocols and security measures to securely share information with partners and suppliers while keeping internal data private.
- They enable collaboration and information sharing for joint projects or distribution purposes in a secure manner.
In summary, an extranet extends a private intranet beyond the company firewall to allow partners and suppliers access to select data and applications for business collaboration while maintaining security and privacy of internal information.
IRJET- Review on RFID based Audio Tour Guide with NFC Monitoring FunctionIRJET Journal
This document summarizes a proposed RFID-based audio tour guide system with NFC monitoring functions. The system would use RFID tags embedded in locations and artifacts that transmit unique radio signals to a receiver held by tourists. The receiver would play relevant audio, text, or image files upon detecting signals to inform tourists. Additionally, each tourist group would be given a unique NFC tag, and rooms would have NFC tag readers. Detecting a tag with a reader would log the group's entry in a cloud-based database for monitoring tourist movements. The system aims to accurately deliver location-based information to tourists while maintaining logs of their locations through RFID and NFC technologies.
A novel password based mutual authentication technique for 4 g mobile communi...eSAT Publishing House
The document describes a proposed password-based mutual authentication technique for 4G mobile communications. The technique aims to authenticate both the subscriber and network using the subscriber's password. It involves four phases: subscriber enrollment where the subscriber chooses an ID and password which are stored on their SIM card; subscriber authentication which occurs during each connection attempt where the subscriber provides their ID and password for verification; network authentication where the network also verifies itself to the subscriber; and a password change phase where the subscriber can update their password without server involvement. The proposed technique is claimed to provide advantages such as minimizing computation, preventing multiple SIMs with the same ID, and not requiring storage of ID/password on the server.
The latest development networks and communications (Microsoft Word)ainizbahari97
1. The document describes various topics related to computer networks and communications technologies. It discusses mobile computing technologies like wearable computers and smartphones. It also covers networking topics such as personal area networks (PANs), virtual private networks (VPNs), wireless local area networks (WLANs), and WiMAX. Finally, it discusses internet technologies including voice over internet protocol (VoIP) and blogs.
The latest development in network and communicationMuhd Airil
This document defines and describes various types of computer networks and communication technologies. It begins by defining a computer network as a collection of interconnected devices that allows sharing of resources and information. It then discusses mobile computing and specifies the features of mobile devices like smartphones. The document also describes Internet technologies like VoIP and blogs. It explains different network types such as PAN, VPN, WLAN, and WiMAX. It concludes that computer networks have greatly benefited various fields by connecting people worldwide.
IRJET- Wireless Sensor Network Based Internet of things for Environmental...IRJET Journal
This document describes a wireless sensor network system using Internet of Things technology for environmental impact analysis. The system uses low-cost sensors and Raspberry Pi, Arduino, and XBee modules to monitor environmental conditions like temperature and humidity from different locations. Sensor data is sent to the Raspberry Pi base station via a ZigBee wireless protocol and stored. The data can be accessed remotely through a web interface to monitor and control the system. The system provides a low-cost way to wirelessly monitor the environment in real-time.
This document summarizes a presentation about Bluetooth security mechanisms. It discusses Bluetooth technology standards and features, security mechanisms like frequency hopping and encryption, weaknesses like easy scanning and weak PINs, known attacks like Bluejacking and bluesnarfing, and recommendations to improve security like using a strong PIN and turning off Bluetooth when not in use. The presentation provides an overview of Bluetooth security risks and best practices.
PPT on Bluetooth Based Wireless Sensor NetworksSiya Agarwal
Bluetooth wireless sensor networks can be implemented using Bluetooth technology. Smart sensor nodes equipped with sensors, microprocessors and Bluetooth communication interface can collect data and transmit it to a gateway node. The network involves discovering Bluetooth devices, establishing connections and exchanging data. Algorithms are used for initialization, discovery, parameter setting and data transfer between nodes. While Bluetooth provides benefits like being wireless and inexpensive, it also has limitations such as average data rates and security risks.
Iaetsd bluetooth based smart sensor networksIaetsd Iaetsd
This document discusses Bluetooth-based smart sensor networks. It begins by introducing wireless sensor networks and their components. It then provides background on Bluetooth, describing how it operates using frequency hopping spread spectrum in the 2.4GHz band. The document outlines Bluetooth network structures, including piconets and scatternets. It discusses implementing a smart sensor network with Bluetooth, including smart sensor node architecture and discovery of sensor nodes by the gateway. The document concludes that Bluetooth represents an opportunity for wireless sensor network architectures in industrial and home applications by reducing wiring costs and integrating environments.
The document provides information on data, information, and information systems. It defines data as raw unorganized material that has little value on its own. Information is organized data that is meaningful to a user. An information system is a set of related components that collects data, processes it, and provides information. It gives examples of information systems used in education like learning management systems, and information systems used in business for online shopping, transportation, and hotel booking.
NEAR FIELD COMMUNICATION (NFC) TECHNOLOGY: A SURVEY IJCI JOURNAL
Near Field Communication, NFC- is one of the latest
short range wireless communication technologies.
NFC provides safe communication between electronic
gadgets. NFC-enabled devices can just be pointed or
touched by the users of their devices to other NFC-
enabled devices to communicate with them. With NFC
technology, communication is established when an NF
C-compatible device is brought within a few
centimetres of another i.e. around 20 cm theoretica
lly (4cm is practical). The immense benefit of the
short
transmission range is that it prevents eavesdroppin
g on NFC-enabled dealings. NFC technology enables
several innovative usage scenarios for mobile devic
es. NFC technology works on the basis of RFID
technology which uses magnetic field induction to c
ommence communication between electronic devices in
close vicinity. NFC operates at 13.56MHz and has 42
4kbps maximum data transfer rate. NFC is
complementary to Bluetooth and 802.11 with their lo
ng distance capabilities. In card emulation mode NF
C
devices can offer contactless/wireless smart card s
tandard. This technology enables smart phones to
replace traditional plastic cards for the purpose o
f ticketing, payment, etc. Sharing (share files bet
ween
phones), service discovery i.e. get information by
touching smart phones etc. are other possible
applications of NFC using smart phones. This paper
provides an overview of NFC technology in a detaile
d
manner including working principle, transmission de
tails, protocols and standards, application scenari
os,
future market, security standards and vendor’s chip
sets which are available for this standard. This
comprehensive survey should serve as a useful guide
for students, researchers and academicians who are
interested in NFC Technology and its applications [
1].
This document provides information about different types of physical transmission media. It discusses three main types of cables used for physical transmission: twisted-pair cable, coaxial cable, and fiber optic cable. Twisted-pair cable consists of two insulated copper wires twisted together, which helps cancel out electromagnetic interference. Coaxial cable contains a central conducting core surrounded by a metal shield. Fiber optic cable uses glass fibers to transmit data via laser signals. The document also mentions that cables are a common physical transmission medium used in Ethernet and token ring local area networks.
Design and implement a smart system to detect intruders and firing using IoT IJECEIAES
The security system is essential for occupants' convenience and protection from intruders and fire. Theft and fire are the most important requirement for the security system. The advancement of wireless sensor networks using IoTs increased the features in a security system and play an important role in daily life. In this paper, the proposed system is divided into two units. The first one about security which use to take snapshots by a camera whenever there is fire or intruders in the security zone and mail it to the owner every three seconds by using Arduino configured with MATLAB program. MATLAB program plays the main role to coordinate between sensors and to turn on/off the cameras. The second unit is about controlling the appliances and also the main door by using AVR microcontroller configured by CVAVR software that connected with Bluetooth sensor and controlled by a smartphone by using the implementation software built-up in the smartphone. To arrival of the control unit, the user should send code from the software implementation to the framework that use to turn on/off the devices or open/close the door. This proposed system is designed and implemented in details in this paper.
Bluetooth is a wireless technology standard that allows short-range transmission of data between devices like mobile phones, laptops, and wireless speakers. It uses radio waves in the unlicensed ISM band from 2.4-2.4835 GHz and employs frequency hopping to reduce interference. Bluetooth devices can connect to each other dynamically in a personal area network of up to 7 devices within 10 meters. Security features protect data transmission between trusted and untrusted devices.
Bluetooth is a wireless technology standard for exchanging data over short distances. It was created in 1994 and named after the Viking king Harald Bluetooth who united Denmark and Norway. Bluetooth uses short-wavelength UHF radio waves in the industrial, scientific and medical (ISM) band from 2.4 to 2.485 GHz to enable communication between devices like computers, phones and wireless accessories. It allows up to seven devices to connect in a personal area network (PAN) called a piconet, with one device acting as the master that the others connect to as slaves. Bluetooth provides wireless alternatives to wires and cables through frequency hopping spread spectrum (FHSS) technology which changes the transmission frequency many times per second, distributing the
Bluetooth is a wireless technology standard for exchanging data over short distances. It allows many types of digital devices to connect easily and quickly without cables by creating small personal area networks. Bluetooth works using a radio technology called frequency-hopping spread spectrum that breaks up data being sent and transmits pieces of it on up to 79 bands from 2.4-2.4835 GHz. It defines protocols for devices to discover each other and establish connections to exchange data over the air. Bluetooth is gaining popularity and acceptance for enabling wireless connections between diverse devices from phones to laptops to peripherals. While offering advantages, it also raises some issues regarding interference, security, and reliability that require analysis.
Bluetooth is a wireless technology standard that allows short-range wireless connections between devices like mobile phones, laptops, printers, and other electronics. The document provides an overview of Bluetooth including its history, how it works using frequency-hopping spread spectrum in the 2.4GHz band, supporting up to 10 meters of range. It discusses Bluetooth components, security modes, early slow product rollout, and potential business uses and benefits like replacing cables and wireless file sharing. Standards bodies like the Bluetooth SIG and key technology leaders are also mentioned.
Bluetooth is a wireless technology standard for exchanging data over short distances. It allows devices such as phones, laptops, printers, and more to connect without wires or cables. Bluetooth devices can communicate within a range of about 30 feet, forming a personal area network (PAN). Key features of Bluetooth include low power consumption, encryption for security, and the ability to connect several devices to the same network through pairing. Common applications of Bluetooth technology include connecting headphones, sharing files between devices, and using wireless keyboards and mice.
This document summarizes a seminar presentation on Bluetooth technology. It begins by explaining the origin of the name Bluetooth, which comes from a 10th century Viking king known for uniting territories. It then defines Bluetooth as a wireless technology standard for data transfer over short ranges using radio waves. The document outlines the history and development of Bluetooth, describes its specifications and topology including piconets and scatternets. It discusses Bluetooth hardware architecture and lists applications for Bluetooth in electronics and medical devices. It concludes by providing references for further information.
Bluetooth is a wireless technology standard for exchanging data over short distances. It was originally conceived as a cable replacement and can be used for data transfer, wireless audio, etc. Bluetooth operates in the 2.4 GHz spectrum and has an effective range of about 10 meters. It works by establishing short-range radio links called piconets that allow devices to connect and exchange information securely in an ad-hoc manner. The technology has grown in popularity and future versions aim to improve capabilities such as speed, range and security.
Bluetooth is an open wireless technology standard used for exchanging data over short distances between devices like phones, laptops, headphones, smartwatches, and more. It allows for low-power wireless connections within a range of around 10 meters. Bluetooth specifications and profiles define how devices communicate and what applications they support, allowing different devices to connect and exchange information in a standardized way.
Bluetooth based smart sensor devices 2Vijay Kribpz
This document discusses Bluetooth-based smart sensor devices. It begins with an abstract and introduction to Bluetooth technology, defining it as a short-range wireless standard. It then covers Bluetooth operations, topologies of piconets and scatternets, and how Bluetooth works. The document discusses using sensors with Bluetooth, including examples like pressure sensors. It describes building Bluetooth-based wireless sensor networks and addressing Bluetooth security. It outlines characteristics and applications of Bluetooth technology, as well as advantages and disadvantages. The conclusion envisions future expansion of Bluetooth applications.
Bluetooth is a short-range wireless communication technology that allows devices to connect without wires. It uses radio waves to transmit data between fixed or portable devices securely. Bluetooth devices can connect to form a piconet of up to seven devices connected to one master device or scatternet of multiple connected piconets. Bluetooth uses frequency hopping spread spectrum technology and adaptive frequency hopping to minimize interference. It has defined profiles for common applications and provides security modes to enforce link-level security. Common applications of Bluetooth include wireless headsets, input devices, file transfer between devices, and connecting devices in personal area networks.
Bluetooth is a wireless technology that allows short-range connections between electronic devices like computers, phones, and other portable devices. It uses radio waves instead of wires to connect devices within about 30 feet of each other, eliminating the need for direct line-of-sight connections. A group of companies formed the Bluetooth Special Interest Group to develop the Bluetooth specifications and promote its use. While initially developed for business users, Bluetooth's ability to connect diverse devices wirelessly has led to its use in many consumer products as well.
Bluetooth is a short-range wireless technology that allows data exchange between fixed and mobile devices over short distances. It uses radio waves in the 2.4 GHz band and supports data rates of up to 1 Mbps within a 10 meter range. Bluetooth devices can form piconets with one device acting as the master to multiple slaves, or scatternets by interconnecting multiple piconets. Common applications include wireless headsets, file transfers between devices, and connecting peripherals like keyboards and mice. Advantages are wireless connectivity, low power usage, and avoidance of interference through frequency hopping. Limitations include short range and lower security compared to other wireless standards. Future versions aim to improve speed, range, and support larger networks.
Bluetooth is a wireless technology standard for exchanging data over short distances between devices like mobile phones, laptops, headphones, and other electronic devices. It was created in 1994 by Ericsson to replace wired cables for connecting devices. Bluetooth uses radio waves to connect devices within a short range of about 10 meters by forming small networks called piconets. Devices in a piconet communicate by hopping between 79 different frequencies 1,600 times per second to avoid interference. Bluetooth allows for wireless connections between many devices like computers, phones, headphones, printers and more.
Bluetooth is a wireless technology standard for exchanging data over short distances. It allows for data transmission between devices like computers, phones, and other peripherals. Bluetooth operates using radio waves in the unlicensed 2.4GHz spectrum in a process called frequency-hopping spread spectrum. It establishes short-range radio links called piconets that allow for both point-to-point and point-to-multipoint connections.
Bluetooth is a wireless protocol that allows short-range data transmission between devices like mobile phones, laptops, printers, and more. It uses radio waves to connect devices within about 100 meters of each other without requiring line of sight. Bluetooth specifications have evolved over time from initial versions 1.0 and 1.1 that had issues, to later versions that increased data rates and added new features. Common applications of Bluetooth include connecting headphones to phones and transferring files between devices. While similar in using radio waves, Wi-Fi provides higher throughput over greater distances but requires more expensive hardware.
The document discusses Bluetooth technology. It provides an overview of Bluetooth, including its history and development. The key points are:
- Bluetooth was developed in 1994 as a wireless standard to replace wired cables and enable communication between nearby electronic devices.
- It uses short-range radio transmissions in the 2.4GHz spectrum for data transfer between devices within about 10 meters of each other.
- The Bluetooth standard defines protocols and procedures for device discovery, connection establishment, and data and voice transfer between paired devices.
- Common applications of Bluetooth include wireless headphones, medical devices, sports sensors, and connecting computers, phones and other consumer electronics without cables.
- The technology aims to provide secure, low
Bluetooth is a wireless technology standard that allows short-range data transmission between electronic devices like computers, phones, and other peripherals. The document discusses Bluetooth's architecture and protocols which break down data into packets suitable for wireless transmission. It describes how Bluetooth devices connect and exchange data securely using encryption. Finally, it outlines Bluetooth's advantages like wireless connectivity for mobile devices and limitations like its short connection distance.
The document provides an overview of Bluetooth technology. It discusses that Bluetooth allows electronic devices to connect and exchange information wirelessly over short distances, using radio transmissions. The document outlines the history and development of Bluetooth standards over time. It describes how Bluetooth connections work through master-slave piconets and scatternets. The document also discusses pairing, common Bluetooth devices, advantages like ease of use and low power requirements, and disadvantages like lower speeds and security risks compared to other wireless technologies.
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2. 2
Abstract
This paper provides an overview of Bluetooth® wireless technology and instructs users on how to
establish Bluetooth connections using HP products. Bluetooth wireless technology is an inexpensive,
short-range radio technology that eliminates the need for proprietary cabling between devices such
as notebook PCs, handheld PCs, personal digital assistants (PDAs), cameras, and printers.
Introduction
Bluetooth wireless technology (BWT) was developed in 1994 at Ericsson in Sweden. The original
purpose of BWT was to eliminate the need for proprietary cable connections between devices such
as PDAs and notebook PCs. Although infrared communication existed at the time, it required line-of-
sight contact. Therefore, Ericsson chose to use an inexpensive, low-power radio built into each device,
making it possible to wirelessly connect devices through walls and other nonmetallic materials. After
Ericsson began work on BWT, the concept blossomed into a radio technology that simultaneously
connects several devices in a wireless personal area network (WPAN).
Because of the unlimited potential of BWT, the Bluetooth Special Interest Group (SIG)1
was formed
in 1998 to develop the Bluetooth Specification IEEE 802.15. The specification standardized the
development of BWT-enabled devices so that devices from different manufacturers can work together.
What does this mean for you? With BWT, you can run your presentation on a client's BWT-enabled
projector without a cable connection. If you leave a file on the desktop PC back at your office, don't
fret. Use your BWT-enabled PDA or laptop to connect to your office LAN via your BWT-enabled
mobile phone—without taking the phone out of your briefcase. Exchange electronic business cards
with everyone in the room, regardless of where they are sitting, with a few taps on your PDA. Then,
the PDA saves you time by automatically synchronizing their contact information with the email
application on your laptop. These BWT-enabled products are available today.
This paper provides an overview of BWT, describes the requirements for establishing a
BWT connection, and provides information about HP products that incorporate BWT.
Where did the name Bluetooth come from?
The Bluetooth SIG adopted the code name as a tribute to the
tenth-century Viking king Harald Blåtand who peacefully united
Denmark and Norway. Harald liked to eat blueberries, which
gave his teeth the coloration that lead to the nickname "Bluetooth."
1
The founding members of the Bluetooth SIG are Ericsson, Intel, IBM, Nokia, and Toshiba. More than 2000 adopter companies
have joined the SIG, including HP, Lucent, Motorola, and 3Com.
3. 3
How Bluetooth wireless technology works
BWT-enabled devices operate in the unrestricted 2.4-gigahertz (GHz) Industrial, Science,
Medical (ISM) band. The ISM band ranges between 2.400 GHz and 2.483 GHz. BWT-enabled
devices use seventy-nine 1-megahertz frequencies (from 2.402 to 2.480 GHz) in the ISM band
as shown in Figure 1. BWT-enabled devices use a technique called frequency hopping to minimize
eavesdropping and interference from other networks that use the ISM band. With frequency hopping,
the data is divided into small pieces called packets. The transmitter and receiver exchange a data
packet at one frequency, and then they hop to another frequency to exchange another packet. They
repeat this process until all the data is transmitted.
BWT devices randomly hop between frequencies up to 1600 times per second—much faster than
other types of devices that use the ISM band. This means that if another device, such as a 2.4-GHz
cordless phone, interferes with a BWT network at a particular frequency, the interference only lasts
for about 1/1600 of a second until the BWT devices hop to another frequency. This gives BWT
networks a high immunity to interference from other 2.4-GHz devices.
There are three classes of BWT radio devices, each with a different maximum range:
Class 1 (100 meters); Class 2 (50 meters); and Class 3 (10 meters). HP notebooks
feature Class 3 BWT radios, and HP printers feature Class 1 radios.
Figure 1. BWT-enabled devices hop between frequencies up to 1600 times per second.
4. 4
BWT network topologies
BWT-enabled devices form network topologies called piconets and scatternets. A piconet consists
of up to eight BWT-enabled devices (Figure 2). When a piconet is established, one device sets the
frequency-hopping pattern and the other devices synchronize their signals to the same pattern. The
device that sets the frequency-hopping pattern is called the primary device and the other devices are
called secondary devices. Each piconet has a different frequency-hopping pattern to differentiate its
signals from the signals of other piconets.
Figure 2. A piconet consists of up to eight BWT-enabled devices.
5. 5
A scatternet is formed when two or more piconets are linked by a common BWT-enabled
device (Figure 3). When a device is present in multiple piconets, it synchronizes to the master
of each piconet with which it is currently communicating and sets the hopping pattern of the
piconet in which it is the master.
Figure 3. A scatternet is two or more piconets connected by a common device.
BWT security
BWT security is complex; yet, it is mostly transparent and easy for users to implement. BWT uses
three types of security mechanisms: authentication, authorization, and encryption. Authentication
verifies the identity of the BWT device trying to connect with your device. After authentication is
complete, your Bluetooth device grants (authorizes) another Bluetooth device access to a specific
service. Encryption translates data into a format that can be read by only another device with the
same encryption key.
The implementation of these mechanisms occurs at 3 levels (modes) of security:
• Mode 1—No security; anyone can use the device. This mode is the default setting for
public devices such as printers.
• Mode 2—In this mode, permission to access your device is dependent on the service(s) you
authorize (Service Level security). With your PDA, for example, you can allow another device
to exchange electronic business cards and deny the device access to contact information and
calendar entries.
• Mode 3—In this mode, the devices must be paired before they can establish a connection and
transfer data (Link Level security). For more information, see "Pairing" in the following section.
6. 6
Establishing BWT connections
This section describes how to establish BWT connections using your notebook PC, iPAQ Pocket PC,
printer, and cellular phone. The first step is to activate BWT functionality on each device. Then, you
can select the services (profiles) that your device will make available to other BWT-enabled devices.
If you decide to operate your device in secure mode, you must pair the device with another
BWT-enabled device before they can interoperate. These requirements are explained below.
Activating BWT devices
Notebook PCs
If you are not sure whether your notebook supports BWT, check for the presence of Bluetooth
Devices in Device Manager as follows:
1. Select the Start button in the lower-left corner of the screen.
2. Then select Control Panel > Performance and Maintenance > System >
Hardware tab.
3. Select the Device Manager button.
4. If your notebook supports BWT, you will see Bluetooth Devices in the Device Manager
window (Figure 4).
Figure 4. Confirming Bluetooth capability via Device Manager
7. 7
The following 3 steps activate your BWT-enabled notebook PC:
1. Install the BWT software.
2. Enable BWT functionality.
3. Set up the BWT software.
These steps are explained below.
Install the BWT software
The required BWT software comes preloaded on HP notebook PCs; however, you must install
the software as follows:
1. Select Start > All Programs > Software Setup.
2. When the Software Setup Welcome window is displayed, select Next.
3. Select the check box next to Bluetooth by hp to enable the software for installation,
and then select Next.
4. Select Finish to complete the installation and to restart the computer.
Enable BWT functionality
If the wireless light (ICON) is off, turn it on by pressing the wireless button on your notebook. Refer
to your notebook user documentation if you need help locating the wireless button and light. When
you turn on the wireless device for the first time, the Found New Hardware wizard opens. Follow the
instructions in the wizard to load the BWT driver.
Set up the BWT software
After the software is installed and BWT functionality is enabled, a Bluetooth icon will appear in the
Windows System Tray located in the lower-right part of the screen. The Bluetooth icon provides easy
access to Bluetooth operations. The color of the icon indicates the status of the connection (Table 1).
Table 1. Bluetooth status
Disabled Enabled Connected
Blue with red logo Blue with white logo Blue with green logo
If BWT is disabled (red logo), enable it by right-clicking the Bluetooth icon and selecting
Start the Bluetooth Device. The logo will change from red to white. Then you can use
the Bluetooth Setup wizard to configure the service and security features as follows:
1. Right-click the Bluetooth icon, and then select Explore My Bluetooth Places.
2. Right-click the My Bluetooth Places icon in the Folders pane of Windows
Explorer and select Bluetooth Setup Wizard to begin the configuration process.
For specific instructions about discovering and connecting to other BWT-enabled devices, refer
to the Documentation Library Bluetooth CD that came in the same box as the operating system CD.
8. 8
iPAQ Pocket PCs
Certain h1900, h3800, h3900, and all h2200, h4000, h5000 Series iPAQ Pocket PCs are
shipped with integrated BWT. All h3100, h3600, h3700, h3800, and h3900 Series iPAQ
Pocket PCs support an optional Bluetooth Wireless Expansion Pack.
Select the BWT icon in the lower right corner of the Today screen to activate BWT functionality,
to create BWT connections, or to manage and change the BWT settings. You can also perform
these functions by selecting the Start menu, and then selecting Bluetooth Manager.
If you have an iPAQ that has 802.11 technology, Bluetooth, or both, you can enable or
disable one or both of these wireless technologies by selecting the Start menu, and then
the IPAQ Wireless option.
Printers
The HP 995c Deskjet printer and some models of the HP 450 Deskjet printer feature integrated BWT
capability. After you install the printer software on your notebook, select Start > My Programs >
My Bluetooth Places to manage the BWT printer connection. Refer to the "Selecting BWT device
profiles" section below for a summary of available profiles and the services they enable.
Cellular phones
Activating BWT functionality on a cell phone can be as easy as pressing Menu > Connect >
Bluetooth. After you activate BWT, you can change the default BWT settings and set the level
of discoverability of your phone by other BWT-enabled products, such as computers and PDAs.
The BWT connection can be used to send images, text, business cards, and calendar notes.
Selecting BWT device profiles
Profiles are services that are available for each BWT-enabled device. When two BWT-enabled
devices are within range, they perform a service discovery during which they report a list of available
profiles. If any of the profiles for the two devices match, they can connect and interoperate based on
the matching profiles.
Table 2 describes some of the BWT profiles built into HP notebook PCs, iPAQ Pocket PCs, and
printers. Detailed instructions on performing the functions listed in this section are described in
the documentation that accompanies each HP product. To see the full line of HP BWT offerings
and to view product compatibility, visit http://www.hp.com/products/wireless/PAN/. Also, visit
http://www.hp.com/products/wireless/ for updates to the HP wireless product portfolio.
Table 2. Bluetooth wireless technology profiles supported by HP BWT-enabled products.
HP products
= supported by selected models
Notebooks/
Tablet PCs
Handhelds Printers
Profile Description
Basic printing Enables simpler printing from a BWT-enabled
device to a BWT-enabled printer. Using this profile
does not require specific printer drivers. The iPAQ
Pocket PC requires a third-party printing application
such as PrintPocketCE or HP Mobile Printing.
Dial-up
networking
Allows a device to use a modem that is
attached to another BWT-enabled device.
File transfer Allows one BWT-enabled device to browse a file
system on, create or delete files/folders on, or
transfer files from/to another BWT-enabled device.
9. 9
HP products
= supported by selected models
Notebooks/
Tablet PCs
Handhelds Printers
Profile Description
Generic access Defines the general procedures used for
establishing connections to other BWT-enabled
devices that accept connections and service
requests regardless of the devices’ manufacturer.
Generic object
exchange (OBEX)
Enables printing from devices that
use the OBEX protocol.
Hard copy
replacement
Provides the same print quality and print
speed as when printing using a cable, including
management of print jobs, greater control over
formatting, and other printing features.
Headset Allows a BWT-enabled headset to be used as
the audio input/output mechanism for another
BWT-enabled device, such as a computer or cell
phone.
Human
interface device
Allows input devices such as a keyboard or mouse
to be wirelessly connected to a BWT-enabled
device.
Network access Allows a device to access a LAN via a second
BWT-enabled device that is connected to the LAN.
Serial port Provides a wireless connection that can be
used by applications as though a physical serial
cable connected the devices. It allows you to
synchronize information; print to a BWT-enabled
printer; or transfer information between devices.
Fax Allows a device to send a fax using a remote
BWT-enabled cell phone, modem, or computer.
PIM Item Transfer Allows two BWT-enabled devices to exchange
Personal Information Manager data such as
business cards, calendar items, email messages,
and notes.
PIM
synchronization
Allows two BWT-enabled devices to synchronize
Personal Information Manager data.
Basic imaging Allows one BWT-enabled device (such as
a camera) to transfer an image to another
BWT-enabled device (such as a desktop PC)
for storage, editing, or printing.
Hands Free Allows a BWT-enabled computer or BWT-enabled
car to provide audio input/output for a remote
Bluetooth device, such as a cellular phone.
Audio Gateway Allows a BWT-enabled device (such as a
computer) to use the microphone and/or
speakers of another BWT-enabled device
(such as a headset) as an input or output device.
10. 10
Pairing
Pairing is a bonding procedure that allows you to avoid entering access information each time two
devices establish a connection. If Secure Connection is enabled, devices will pair automatically the
first time they connect (a password, or passkey, must be successfully exchanged). When you pair
two devices, they generate and store a common link key so that you do not need to enter the passkey.
Paired devices exchange encrypted data that cannot be deciphered by unauthorized devices. The
devices remain paired even when
• One of the devices is not powered on.
• A service connection is interrupted or the service is stopped.
• One or both of the devices are restarted.
You can manually pair your device with another connected device by right-clicking the device icon
in My Bluetooth Places and selecting Pair Device from the shortcut menu. To unpair a device, right-
click the device icon in My Bluetooth Places, and then select Unpair Device from the shortcut menu.
Summary
Because BWT-enabled devices operate in the unrestricted 2.4-GHz ISM band, numerous
manufacturers can develop BWT-enabled products to use this frequency band. From PDAs
that automatically synchronize contact information with your laptop and cell phone, to a
car that automatically adjusts the seat and mirrors as you approach it, Bluetooth wireless
technology will eventually unite all the gadgets in your world and change forever the way
you work and play.