3. What is Bluetooth?
Bluetooth is an inexpensive, short-range, low-
power wireless networking technology developed
to replace cables and wires. Bluetooth is becoming
the standard for wireless communication.
4. Who Developed Bluetooth?
Bluetooth was originally developed by Ericsson, and
then in 1998, Bluetooth was formally introduced by
IBM, Ericsson, Intel, Nokia and Toshiba. These
companies formed a trade association known today as
the Bluetooth Special Interest Group (SIG). Thousands
more companies have joined and are committed to
developing the Bluetooth standard.
5. Why is it Called Bluetooth?
The name "Bluetooth" is taken from the 10th century
Danish King, Harald Bluetooth. King Bluetooth had
been influential in uniting Scandinavian Europe
during an era when the region was torn apart by
wars. The Bluetooth SIG felt the name was fitting,
seeing how the technology is designed to allow
cooperation between differing industries such as the
mobile phone, computing and automotive markets.
Bluetooth is a single standard that unites and
simplifies multiple forms of communication used by
multiple different devices.
7. How Bluetooth Technology Works
Connecting Devices
Q: Will the devices
communicate via wires or
through the air?
Q: How will messages or
information be sent
between the two devices?
Q: How will they know if they
received the same
message that was sent?
8. What is the Range of Bluetooth?
Class Signal Strength Range
Class
1
1 milliwatt Up to 33 feet (10
meters)
Class
2
10 milliwatts Up to 33 feet (10
meters)
Class
3
100 milliwatts Up to 328 feet (100
meters)
9. How Secure are Bluetooth Networks?
Bluetooth utilizes two types of security measures. First, Bluetooth uses
frequency
hopping (1600 hops/sec), which is added protection against
eavesdropping. Next, there is built-in security at the physical layer.
This feature allows one-way, two-way, or no authentication through the
use of PINs.
Security setup and key management are done by the software layers.
This allows the user to set the security requirements as needed. Users
are in control of the relationships between Bluetooth devices and
networks.
For Example: you will be able to allow your roommate's computer to
connect to your Bluetooth printer, but you can also prevent him from
accessing your MP3 player.
10. What Kind of Devices Use Bluetooth?
Many devices use Bluetooth
technology today. It is
commonly used in
computers, cell phones, MP3
players, printers, keyboards
and mice, GPS receivers,
phone and computer
headsets, and many more.
As Bluetooth technology
continues to grow, so will the
number of devices that use
it.
11. The Advantages of Bluetooth
Main Reasons to Use a Bluetooth Device:
Bluetooth Devices are Wireless.
Bluetooth Technology is Inexpensive.
Bluetooth is Automatic.
Standardized Protocol = Interoperability
Low Interference
Low Energy Consumption
Instant Personal Area Network (PAN)
Upgradeable
12. Limitations of Bluetooth
There are two main limitations of the current
Bluetooth wireless standard:
Slow transfer rate
Susceptibility to interference
13. The future of Bluetooth
Bluetooth 3.0
It's FAST
Picture this...
High bandwidth mitigates interference
Backwards compatibility
