Method of detecting use of a stolen communication unit

Details Method of detecting use of a stolen communication unit Method of detecting use of a stolen communication unit

1995-12-11

1997-06-10

Bost, Dwayne

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 62, 455 542, 455349, H04Q 720

Patent

active

056384238

ABSTRACT:
Unauthorized access of a wireless communication system may be prevented by providing a communication apparatus. The communication apparatus includes a communication unit (102) and a proximity user card (115). The proximity user card (115) communicates user identification information with the communication unit (102) over a second RF communication path (119). The user identification information indicates whether the proximity (115) is within a predetermined distance of the communication unit (102). When the proximity user card (115) is separated by more than the predetermined distance, the communication unit (102) will transmit an invalid proximity message to the central controller (101).

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