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Security monitoring system and method

  • US 5,898,370 A
  • Filed: 12/16/1997
  • Issued: 04/27/1999
  • Est. Priority Date: 12/16/1997
  • Status: Expired due to Term
First Claim
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1. A tamperproof security device for remotely monitoring the security status of an article, said device including:

  • a passive two way communication circuit for receiving a remotely generated request for status information and, responsive to said request, for transmitting said status information to a remote location; and

    breakable substrate means for supporting said passive circuit and for support positioning the security device on said article so that said substrate is broken and said circuit is desabled when said article has been subject to tampering.

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