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Bluetooth: Personal Wireless NetworkingBluetooth: Personal Wireless Networking
If you've got a wireless network for your computers already,
well, you might get a bit excited about what I'm going to say
next. How would you feel if your PDA, your mobile phone, your
mp3 player and almost everything else you connect to your
computer could be wireless too? You'd like that? Well, it's
already a reality and has been for some time now.
Bluetooth is wireless and automatic, and has a number of
interesting features that can simplify our daily lives.
Bluetooth is a standard developed by a group of electronics
manufacturers that allows any sort of electronic equipment --
from computers and cell phones to keyboards and headphones -- to
make its own connections, without wires, cables or any direct
action from a user. Read on...
Personal Area Network
Using wireless networking with your personal gadgets is often
called PAN, which stands for Personal Area Network. The idea is
that, in the future, we'll all have laptop computers with their
batteries charged and no more need to connect any wires to them
at all -- you just place your Bluetooth device near the
computer, and the computer sees it and can use it straightaway.
Bluetooth has been around and in-use since 1999, and it's only
getting more popular. It was designed to be secure, low cost,
and easy to use from day one.
There are two classes of Bluetooth that are in popular use:
class 1 and class 2. Class 2 is the most common and cheaper
standard, allowing you to use a device that is up to 10 metres
(32 feet) away. Class 1 is rarer, but you can still find devices
that use it easily enough, and it has ten times the range: 100
metres or 320 feet.
How Does It Work?
Bluetooth is more flexible than 802.11 wireless networking, in
exchange for the shorter range. Essentially, a Bluetooth-enabled
computer has one Bluetooth receiver installed in it, and this
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