Bluetooth connection : the vital link?

'Bluetooth' is a way of using wireless to communicate data and voice over short distances of a few yards or so. The protocol specifies how mobile phones, wireless devices, computers and PDAs interconnect with each other, with computers and with office or home telephones.
Using Bluetooth, for instance, all a user would need to carry would be a headset and keypad - these would be linked to the phone or other devices in a pocket or bag.
The first generation of Bluetooth devices exchange data at a rate of up to 1Mbit/s, regardless of possible interference. The system transmits and receives via a short-range radio link on frequencies set aside globally (the 2.4GHz licence-free band).