Security system with random number remote communication

Details Security system with random number remote communication Security system with random number remote communication

1997-10-10

1999-08-17

Cuchlinski, Jr., William A.

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 34082572, 34082534, 380 42, 380 43, 380 44, G08C 1900, H04L 900

Patent

active

059400021

ABSTRACT:
A security system that is useful for protecting vehicles from theft and buildings from unauthorized entry, for example, includes utilizing random numbers within remotely transmitted signals. A remote signaling device transmits a signal to a system controller with instructions for a desired operation of the system. The invention prevents a potential thief from capturing one or more transmitted signals and later mimicking or predicting a subsequent signal by including or utilizing a random number when generating the transmitted signal. The random number is incorporated into the transmitted signal in one of several ways according to this invention. Single-use or limited re-use of random numbers enhances the security and integrity of the system.

REFERENCES:
patent: 5109221 (1992-04-01), Lambropoulos et al.
patent: 5412379 (1995-05-01), Waraksa et al.
patent: 5696828 (1997-12-01), Koopman, Jr.

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