Method and apparatus for providing container security with a tag
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United States of America Patent
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-
Jun 8, 2004
Grant Date -
N/A
app pub date -
Apr 26, 2002
filing date -
Nov 9, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device (12) facilitates sealing and tracking of a container (18). The device includes a bolt (166) which extends through openings in a latch mechanism (19) on the container. The bolt also passes through spaced coils (251, 252) of the seal device. The seal device uses one coil to generate a magnetic field, while monitoring the corresponding magnetic field induced in the other coil. Tampering with the bolt affects the magnetic field, which in turn permits the seal device to detect the tampering. The seal device periodically transmits wireless signals (71), which can be remotely received for purposes of tracking the container and monitoring the integrity of the seal.
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