Personnel monitoring tag with tamper detection and secure reset

Details Personnel monitoring tag with tamper detection and secure reset Personnel monitoring tag with tamper detection and secure reset

1990-08-01

1991-12-24

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340539, 340572, G08B 2100

Patent

active

050756702

ABSTRACT:
A signalling tag of the type used in house arrest systems has a tamper detection device for detecting removal of the tag from the monitored person. The signal is set to a tamper condition upon removal. The tamper detector can only be reset to the normal state by a reset signal which incorporates a characteristic of the signal sent by the tag. This provides enhanced protection against attempts by the monitored person to defeat the system through unauthorized resetting.

REFERENCES:
patent: 3806874 (1974-04-01), Ehrat
patent: 4747120 (1988-05-01), Foley
patent: 4792796 (1988-12-01), Bradshaw et al.
patent: 4885571 (1989-12-01), Pauley et al.
patent: 4924211 (1990-05-01), Davies
patent: 4980671 (1990-12-01), McCurdy

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