Bluetooth is a standard developed by a group of electronics manufacturers that allows any sort of electronic equipment -- from computers to keyboards and headphones -- to make its own connections, without wires, cables or any direct action from a user. Bluetooth is intended to be a standard that works at two levels:
· It provides agreement at the physical level -- Bluetooth is a radio frequency standard.
· It also provides agreement at the next level up, where products have to agree on when bits are sent, how many will be sent at a time and how the parties in a conversation can be sure that the message received is the same as the message sent.