Bluetooth technology is a low-power, low-cost wireless technology for short-range radio communication between electronic devices. (i.e., mobile phones, laptops, PDAs, stereo headsets, MP3 players, digital cameras, PC and computer peripherals) Bluetooth is basically a wireless USB.
Technique:
• Embedded microchip that sends and receives radio signals.
• These radio signals are multi-directional and transmit through walls. Therefore, Bluetooth-enabled devices don’t need to be within view to communicate to each other
• Bluetooth signal hops to a new channel during each transmission, therefore reducing consistent problems with other 2.4 GHz devices
• Class 2–most common and cheaper standard. Operate devices up to 10m (32ft) away Class 1-less frequently used but has 10 times the range. 100m (320 ft)
How Does it Work?
• Bluetooth devices repeatedly send out messages seeking another device within range
• A connection, called a piconet, is made when another Bluetooth device is located
• Each Bluetooth-enabled device can simultaneously communicate with up to 7 devices
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