Blue tooth is an industrial specification for wireless personal area networks (PANs). Blue tooth provides a way to connect and exchange information between devices such as mobile phones, laptops, PCs, printers, digital cameras, and video game consoles over a secure, globally unlicensed short-range radio frequency. The Blue tooth specifications are developed and licensed by the Blue tooth Special Interest Group.
Blue tooth is a radio standard and communications protocol primarily designed for low power consumption, with a short range (power-class-dependent: 1 meter, 10 meters, 100 meters)[1] based on low-cost transceiver microchips in each device.
Blue tooth lets these devices communicate with each other when they are in range. The devices use a radio communications system, so they do not have to be in line of sight of each other, and can even be in other rooms, as long as the received transmission is powerful enough.
More prevalent applications of Blue tooth include:
* Wireless control of and communication between a cell phone and a hands-free headset or car kit. This was one of the earliest applications to become popular.
* Wireless networking between PCs in a confined space and where little bandwidth is required.
* Wireless communications with PC input and output devices, the most common being the mouse, keyboard and printer.
* Transfer of files between devices with OB EX.
* Transfer of contact details, calendar appointments, and reminders between devices with OB EX.
* Replacement of traditional wired serial communications in test equipment, GPS receivers, medical equipment and traffic control devices.
* For controls where infrared was traditionally used.
* Sending small advertisements from Bluetooth enabled advertising hoardings to other, discoverable, Bluetooth devices.
* Seventh-generation game consoles—Nintendo Wii[2], Sony PlayStation 3—use Bluetooth for their respective wireless controllers.