Enclosure tamper detection and protection
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United States of America Patent
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Dec 23, 2008
Grant Date -
Feb 21, 2008
app pub date -
Apr 20, 2007
filing date -
Apr 20, 2006
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A tamper detecting enclosure arrangement for enclosures containing an interior space in which a protected item is positioned having a magnetoresistive sensing memory storage cell positioned in or near the protected item in the enclosure having a two state offset magnetoresistance versus externally applied magnetic field. A magnet is positioned at a selected separation distance from the magnetoresistive sensing memory storage cell to thereby provide a magnetic field about the magnetoresistive sensing memory storage cell if said enclosure has not been opened in such a manner as to result in substantially increasing said separation distance.
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