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Method and system for accepting a pass code

  • US 7,882,361 B2
  • Filed: 02/05/2004
  • Issued: 02/01/2011
  • Est. Priority Date: 02/05/2004
  • Status: Active Grant
First Claim
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1. A method of accepting a pass code, comprising:

  • providing a user with a machine-generated challenge; and

    receiving, from a user-input device, user input which represents a transformation of the machine-generated challenge into a pass code allocated to the user, wherein the user input is dependent on the machine-generated challenge such that the user input is different for different machine-generated challenges;

    generating a response from the user input received from the user input device, wherein the user input does not include the pass code itself; and

    transmitting the response to a remote authorisation unit to authenticate the response without transmitting the pass code to the remote authorisation unit and without generating the pass code from the user input prior to said transmitting, wherein said response allows the user to be validated at the remote authorisation unit dependent on said response compared to a predicted response based on knowledge of the challenge and a stored data record of the pass code.

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