Is a wireless short range communications specification supported by a special interest group comprised of Ericsson, Nokia, Intel, IBM and Toshiba. It allows cable free connectivity between mobile phones, mobile PCs, printers, and hand helds. The range of Bluetooth is 10 meters (30 feet).It supports voice or data transmissions at a rate of up to 1Mbps and has a frequency range of 2.4 to 2.4835 GHz. It is specifically designed to replace the use of cables between devices, such as to connect wireless keyboard or wireless mouse to the desktop computer. Bluetooth technology is even used to send print job wirelessly from a portable computer to a printer or it is used to connect two mobile phones for transferring certain data like music or files. In today’s world Bluetooth Technology is available in cars too, so that the mobile phone is connected to car Bluetooth and it enables the driver to receive or make calls or even connect his music files to the car stereo system. The signals of Bluetooth can transmit through clothing or other non-metallic objects; hence it can connect directly to any Bluetooth Technology encrypted device.