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System for the secure storage and transmission of data

  • US 5,027,401 A
  • Filed: 07/03/1990
  • Issued: 06/25/1991
  • Est. Priority Date: 07/03/1990
  • Status: Expired due to Term
First Claim
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1. A security system for discouraging unauthorized use of a data card, comprising:

  • a data card including storage means for storing data in scrambled form;

    encoder means for encoding the storage means with personal identification data made up of individual data units, each unit having a specific value, said encoder means including means for reading a set of said units having a common value, rearranging said set of units having a common value according to a predetermined algorithm, reading a second set of units having a different common value, rearranging the second set of units, and repeating the process of reading and rearranging sets of data units until the personal identification data is substantially scrambled;

    decoder means for reading and unscrambling the scrambled personal identification data; and

    recorder means for recording the personal identification data to establish a record of the card user.

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