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Secure point of sale terminal

  • US 9,032,222 B2
  • Filed: 11/18/2013
  • Issued: 05/12/2015
  • Est. Priority Date: 01/22/2008
  • Status: Active Grant
First Claim
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1. A device comprising:

  • an enclosure;

    circuitry located on a substrate within said enclosure;

    at least one switch assembly operative to sense when said enclosure is opened; and

    tamper indication circuitry operative to receive an input from said at least one switch assembly and to provide an output indication of possible tampering with said circuitry located on said substrate within said enclosure,said at least one switch assembly including an arrangement of electrical contacts located on said substrate, said electrical contacts including at least first, second and third contacts and a displaceable conductive element, which defines a short circuit between said first and second contacts only when said enclosure is closed,said third contact being arranged between said first and second contacts and said displaceable conductive element so as to normally not be short circuited to said first and second contacts when said enclosure is closed,said tamper indication circuitry and said third contact together being operative such that when said third contact is short circuited to at least one of said first contact, said second contact and another contact, an output indication of possible tampering is provided.

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