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Credit and other security cards and card utilization systems therefore

  • US 3,896,266 A
  • Filed: 06/02/1972
  • Issued: 07/22/1975
  • Est. Priority Date: 08/09/1971
  • Status: Expired due to Term
First Claim
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1. A security card utilization system comprising:

  • a plurality of security cards, each having data recorded thereon relating to the voice characteristics of a respective authorized card holder;

    at least one reading transducer adapted to read said data of any one of said cards presented thereto and to produce a first group of electrical signals which contain said data;

    a first recording means comprising a first magnetic tape loop and a first recording head operative to receive and record said first group of electrical signals on said first tape loop;

    at least one acoustical transducer responsive to the voice of any person and operative to produce a second group of electrical signals representative of the voIce of such person;

    a second recording means comprising a second magnetic tape loop and a second recording head operative to receive and record said second group of electrical signals on said second tape loop;

    first and second pickup means operative to read said first and second tape loops respectively and produce first and second output signals therefrom; and

    at least one comparator connected to said first pickup means and to said second pickup means to receive said first and said second groups of output signals therefrom and operative to effect a comparison thereof to indicate whether or not said person is the authorized holder of said one card.

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