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.
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
Invented in 1994, by a Swedish company
The name "Bluetooth" comes from the 10th
century Danish King Harald Blåtand or Harold
Bluetooth in English.
In 1998, it was promoted by Ericsson, Intel,
Nokia, Toshiba and IBM.
Came together to form the Bluetooth Special
Interest Group (SIG)
Further SIG member improved the device to
interconnect the world.
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
To set a wireless connection, two Bluetooth
enabled devices are required
Both device’s visibility should be on.
Both devices should mutually allow the
connection during the optional security check.
This is called pairing of devices
Now any of the device can transfer files, videos,
audios etc. to another device.
Also can browse file of counter device.
Can handle simultaneously data and voice
Hands-free headset for voice calls and music.
Printing and fax capabilities
Synchronization for PCs and mobile phones
Internet connection can also be set up on one device
using another device internet support.
In-vehicle systems give the ability to make phone
calls, send texts, and even make dinner reservations
Bluetooth technology uses radio waves.
It transmits them over a shorter distance.
Earlier it operated only upto 1 m but now it can
work upto 100 m.
Bluetooth technology operates in the unlicensed
industrial, scientific and medical (ISM) band at
2.4 to 2.485 GHz, using a spread spectrum.
The most commonly used radio is Class 2 and
uses 2.5 mW of power
These have Replaced
cables for transferring
Information from one
Electronic Device to
These have decreased
Strain like carrying
phones while talking,
making hands free to
do another work.
This is cheaply
Data sent between
two Bluetooth devices
is very slow compared
with Wi-Fi transfer
Range Of a Bluetooth
Device is 15-30 feet
depending upon the
It’s Mobility is also
very Important as it
doesn’t need any
power outlet or
Internet connection or
any other items
are robustness, low
power, and low cost
is designed to have
very low power
Security is Biggest
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