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IDENTIFICATION SYSTEM FOR INDIVIDUALS

  • US 3,806,874 A
  • Filed: 04/10/1973
  • Issued: 04/23/1974
  • Est. Priority Date: 04/11/1972
  • Status: Expired due to Term
First Claim
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1. An identification system comprising:

  • a testing station, and a plurality of identification units, each unit comprising, a first store storing data unique to that unit, a first generator coupled to said first store for generating first and second data sequences coded by the data stored in said first store, and a first comparator, said testing station including, a second generator generating first and second data sequences corresponding to those sequences generated by said first generator, a second comparator, means for coupling a unit to said testing station to apply the first data sequences generated by said first and second generators to said first comparator;

    said first comparator generating a signal upon correspondence between said first data sequences, means responsive to said signal to trigger the first generator to generate said second data sequence, and means for applying the second data sequences from said first and second generators to said second comparator to produce an output signal therefrom upon correspondence between the two second data sequences.

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