Technologies
Bluetooth
www.bluetooth.com
"Bluetooth technology is a short-range communications technology that is simple, secure, and everywhere.
It is intended to replace the cables connecting devices, while maintaining high levels of security.
The key features of Bluetooth technology are robustness, low power, and low cost.
The Bluetooth Specification defines a uniform structure for a wide range of devices to connect and communicate with each other.
Connections between Bluetooth enabled electronic devices allow these devices to communicate wirelessly through short-range, ad hoc networks known as piconets.
Piconets are established dynamically and automatically as Bluetooth enabled devices enter and leave radio proximity meaning that you can easily connect whenever and wherever it's convenient for you.
A fundamental strength of Bluetooth wireless technology is the ability to simultaneously handle data and voice transmissions. which provides users with a variety of innovative solutions such as hands-free headsets for voice calls, printing and fax capabilities, and synchronization for PCs and mobile phones, just to name a few.
The range of Bluetooth technology is application specific.
The Core Specification mandates a minimum range of 10 meters or 30 feet, but there is no set limit and manufacturers can tune their implementations to provide the range needed to support the use cases for their solutions.
Bluetooth technology operates in the unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec.
The 2.4 GHz ISM band is available and unlicensed in most countries."