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Method and system for the secure communication of data

  • US 5,907,597 A
  • Filed: 02/23/1996
  • Issued: 05/25/1999
  • Est. Priority Date: 08/05/1994
  • Status: Expired due to Fees
First Claim
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1. A remote access system comprising:

  • a generating device generating a predetermined signal;

    a transmitter transmitting said predetermined signal to a user communication device;

    a receiver receiving, from said user communication device, a response signal representing a response of a user of said communication device;

    an analyzer determining if said response signal includes a signal substantially identical to said predetermined signal previously transmitted by said transmitter; and

    a processor determining if said user is an authorized user based on the results of said determination and at least one other determination made by said analyzer.

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