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Personal identification system

  • US 5,614,890 A
  • Filed: 12/27/1993
  • Issued: 03/25/1997
  • Est. Priority Date: 12/27/1993
  • Status: Expired due to Term
First Claim
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1. A user interface node for a personal identification system comprising:

  • an enclosure having an open end, an exterior and an interior;

    first RF attenuation material affixed to said interior of said enclosure;

    second RF attenuation material affixed to said open end of said enclosure, said second RF attenuation material being in a strip curtain form to allow insertion of an object into said enclosure;

    an antenna mounted in said interior of said enclosure for receiving a radio frequency signal from said object inside said enclosure;

    a user of said personal identification system, said user having a personal detector unit for transmitting a coded radio frequency signal, said personal detector unit attached to said user, said personal detector unit being inserted through said second RF attenuation material into said interior of said enclosure; and

    a receiver for receiving said coded radio frequency signal of said user'"'"'s personal detector unit, said receiver coupled to said antenna and to said personal detector unit by said radio frequency signal.

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