Bluetooth is a wireless technology that allows electronic devices to connect and exchange information over short distances without wires. It was invented in 1994 by Ericsson to replace cables between devices and enhance mobility. Bluetooth works using radio waves to transmit data between devices within around 30 feet of each other. It has become an important wireless standard and is used in many devices like headphones, speakers, printers, and more. While Bluetooth enables cable-free connectivity, it also has limitations like slower speeds than WiFi and potential security issues if not properly encrypted. Overall, Bluetooth continues to be improved and adopted in more applications due to fulfilling the basic need of short-range wireless connectivity.

1. Submitted To: Submitted By:
Mr. Vivek Bhatnagar Sanjeev Kumar Suman
Roll no- 1317006
Seminar
On
Bluetooth

2. Content
• Introduction
• What is Bluetooth
• History
• Types Of Bluetooth Devices:
• Importance Of Bluetooth
• Advantages
• Disadvantages
• Application
• Characteristics Of Bluetooth
• Future Of Bluetooth
• Conclusion
• Reference

3. Introduction
• This technology provides short-range, wireless
connectivity between devices.
• It is intended to replace the cables connecting
portable and/or fixed electronic devices.
• Cables limit the mobility of the consumer and
are easily lost or broken.

4. INTRO
videoclip:-

5. What is BLUETOOTH:
Bluetooth is a wireless technology used to
transfer data between different electronic
devices. The distance of data transmission is
small in comparison to other modes of wireless
communication. This technology eradicates the
use of cords, cables, adapters and permits the
electronic devices to communicate wirelessly
among each other.
(or)
Bluetooth is a high-speed, low-power microwave wireless link
technology, designed to connect phones, laptops, PDAs and other
portable equipment together with little or no work by the user.

6. History of Bluetooth
• Bluetooth was invented in 1994 by Ericsson.
• The company later started working with a larger
group of companies called the Bluetooth Special
Interests Group, or "SIG," to develop the technology
into what it is today.
• Bluetooth is not owned by any one company and is
developed and maintained by SIG.
• The name Bluetooth came from a code name
originally used by SIG for the project and is a
reference to a 10th century Danish king named
Harold Bluetooth, who was responsible for uniting
Norway, Sweden, and Denmark.

7. It comprises of a base band processor, a radio and an antenna . The base-band
processor converts the data into signals, the antenna of another Bluetooth
device, within at least 30 feet distance, receives a transmitted signal in the air.
It uses a frequency hopping spread
spectrum technique (FHSS) - which is
one of two basic modulation
techniques used in spread spectrum
signal transmission. Frequencies are
switched repeatedly during radio
transmission to help reduce unlawful
access or other means of
telecommunications to cross paths
and cause interruption
What is Bluetooth Technology:

8. Types Of Bluetooth Devices:
1. Head Set
2. In-Car Bluetooth System
3. Bluetooth Equipped Printer
4. Bluetooth Equipped Web Cam
5. Bluetooth GPS System
6. Bluetooth Key Board and Mouse
7. Bluetooth fitness band
8. Bluetooth portable speaker

9. Importance Of Bluetooth:
• These have Replaced cables for transferring Information
from one Electronic Device to another one.
• These have decreased Strain like carrying phones while
talking, making hands free to do another work.
• This is cheaply Available.
• It’s Mobility is also very Important as it doesn’t need any
power outlet or Internet connection or any other items.

10. Advantages Of Bluetooth:
• Eliminates wires
• Facilitates Data and Voice Communication
• Offers formation of Ad hoc networks
• Standardized protocol
• Free of charge
• Easy to use
• Low power consumes battery less
• Stationary and mobile environments

11. Disadvantages Of
Bluetooth:
 Data sent between two Bluetooth devices is very slow
compared with Wi-Fi transfer Rate.
 Range Of a Bluetooth Device is 15-30 feet depending upon the
Device.
 Security is Biggest Disadvantage as transfer takes place
through radio waves and a hacker can easily hack it.
 Battery usage is also a problem, it will make device out of
power before it would have if Bluetooth was not powered on.

12. APPLICATIONS
 The Internet Bridge
An extension of this model could be a mobile
computer that allows surfing the Internet irrespective of
the location of the user, and regardless of whether the
user is cordlessly connected through a mobile phone
(cellular) or through a wire line connection (e.g. PSTN,
ISDN, LAN, xDSL).
• Automatic Check-in
Hotels are testing, or plan to test, services that allow
guests to check in, unlock room doors and even control
room temperature with handheld devices equipped with
Bluetooth Technology

13. Bluetooth Characteristics
• It separates the frequency band into hops. This
spread spectrum is used to hop from one channel to
another, which adds a strong layer of security.
• Up to eight devices can be networked in a piconet.
• Signals can be transmitted through walls and
briefcases, thus eliminating the need for line-of-
sight.
• Devices do not need to be pointed at each other, as
signals are omni-directional.
• Governments worldwide regulate it, so it is possible
to utilize the same standard wherever one travels

14. Future Of Bluetooth
• Bluetooth has a good future ahead because it meets a
basic need of connectivity.
• Currently a protocol is being researched that would
support large ad hoc networks.
• Latest version of Bluetooth are improving both its
security and capabilities.
• Ultra wide band has been chosen by the Bluetooth
Special Interest Group as the future of Bluetooth
Technology.
• New versions of Bluetooth technology will meet the high-
speed and large range.
• Many companies are designing impressive Bluetooth
applications in demand.

15. Security
• Authentication and encryption is
provided at the Link Manager
layer.
• The PIN is translated into a 128
bit link key which is used for
authentication.
• After authentication the radios
will settle on a suitable length
encryption key to be used.
• Bluetooth relies on PIN codes to
establish trusted relationships
between devices.

16. Conclusion
• A new global standard for data and voice
• Eliminates Cables.
• Low Power, Low range, Low Cost network devices.
• Bluetooth seems to have a bright future after
reviewing its benefits and wide use.
• Further improvements are planned to be made in
▫ Data Rates
▫ Power Reduction
▫ Range

17. Reference
• www.google.com
• www.wikipedia.com

18. Thanks

19. Queries?