A system that includes a mobile communications unit, wherein an identification
module is added between a radio part and an antenna in a mobile telephone that
includes a Bluetooth function. The identification module includes a mixer for transposing
identification messages from identification devices in a 2.45 GHz RFID system of
the backscatter type, to a baseband for further processing in the computer part
of the unit and optionally communication with a superordinate system by a standard
call channel or a Bluetooth channel. The unit can also send information to identification
devices for alerting and/or transmitting data. Modulation and encoding can be effected
in accordance with the Bluetooth standard, thereby enabling the mixer to be included
as an integral part of a standard Bluetooth radio.
