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Multiple device and/or user association

  • US 7,213,768 B2
  • Filed: 03/16/2005
  • Issued: 05/08/2007
  • Est. Priority Date: 03/16/2005
  • Status: Active Grant
First Claim
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1. A multi-user authentication method, comprising;

  • reading first encoded information at a first time;

    reading second encoded information at a second time;

    authenticating a first person and a second person according to the first encoded information and the second encoded information;

    determining whether a time interval between the first time and the second time is less than or equal to a predetermined time interval; and

    authorizing a procedure when the time interval between the first time and the second time is less than or equal to the predetermined time interval.

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