Patent ID: 7031665

Claim:
A device for utilization of mobile radio telephones for surveillance and/or control purposes, the device comprising: a receiving radio unit with associated receiving antenna having a searching scanner function, for reception of the frequencies which within a related geographical area are used for mobile radio telephone communication, the receiving radio unit to be activated in a first step by an incoming signal from a mobile telephone; a central control unit and a time related synchronizing unit for analyzing the received signal with regard to a PIN/SIM number or corresponding ID and dialed call number for surveillance and decoding of completed hand shaking procedure between the mobile radio telephone and an associated base station and thereby reported PIN/SIM number or corresponding information and and/or from the mobile radio telephone transferred called number; and means, when correspondence is established, for initiating performance of preprogrammed procedures and influencing on predetermined devices, in conformity with corresponding stored information to initiate a predetermined process or action, and should correspondence not be established, returning to a “resting” and listening condition pending a new inputted signal from a mobile telephone.