Security apparatus and method

Details Security apparatus and method Security apparatus and method

1995-11-15

1998-06-09

Trammell, James P.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

34082534, 34082536, 340571, 340572, 3642225, 379106, H04M 300, G08B 1322

Patent

active

057648921

ABSTRACT:
A system for locating and monitoring electronic devices utilizing a security system that is secretly and transparently embedded within the software, firmware, or hardware of a computer. This security system causes the client computer to periodically and conditionally call a host system to report its serial number via an encoded series of dialed numbers. A host monitoring system receives calls from various clients and determines which calls to accept and which to reject. This determination is made by comparing the decoded client serial numbers with a predefined and updated list of numbers corresponding to reported stolen computers. Only calls from clients on the predefined list are accepted. The host also concurrently obtains the caller ID of the calling client to determine the physical location of the client computer. The caller ID, indicating the physical location of the stolen device, and the serial number are subsequently transmitted to a notifying station in order to facilitate the recovery of the stolen device. The security system remains hidden from the user, and actively resists attempts to disable it.

REFERENCES:
patent: 3925763 (1975-12-01), Wadhwani et al.
patent: 4999621 (1991-03-01), Loeb
patent: 5077788 (1991-12-01), Cook et al.
patent: 5511109 (1996-04-01), Hartley et al.
patent: 5566339 (1996-10-01), Perholtz et al.

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