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Method and apparatus utilizing dynamic questioning to provide secure access control

  • US 5,774,525 A
  • Filed: 08/14/1997
  • Issued: 06/30/1998
  • Est. Priority Date: 01/23/1995
  • Status: Expired due to Fees
First Claim
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1. An apparatus for controlling access to a service or facility according to answers provided by a user in response to questions asked of the user, said apparatus comprising:

  • a data base storing information;

    a first module that generates at least one question based upon said information stored in said data base, wherein said at least one question concerns an arithmetic relationship among portions of information contained in said data base, and wherein said at least one question does not explicitly disclose said portions of information contained in said database; and

    means for communicating to the user said at least one question generated by said first module.

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