Tamper evident system

Details Tamper evident system Tamper evident system

1996-07-16

1997-04-08

Cuchlinski, Jr., William A.

Signals and indicators

Indicators

Chemically activated type

2064591, 206807, 215230, G01N 2178

Patent

active

056178123

ABSTRACT:
A tamper evident system for indicating when a closed enclosure (24) has been opened comprises a window (21) and a sensor (22) colour sensitive to presence of a gas. The sensor (22) is located in the enclosure (24) so as to be visible through the window (21). Any compositional change of gas in the enclosure (24) is signalled by a change of colour of the sensor (22).

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