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ADVANCED MULTI-FACTOR AUTHENTICATION METHODS

  • US 20080052245A1
  • Filed: 08/21/2007
  • Published: 02/28/2008
  • Est. Priority Date: 08/23/2006
  • Status: Abandoned Application
First Claim
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1. A method of authenticating electronic communication between a user operated client device and a vendor, the method comprising:

  • receiving a user identifier from a client device;

    receiving a codebook identifier from said client device that identifies a codebook, said codebook comprising a plurality of identification units, each identification unit having a first identifier and a corresponding second identifier; and

    a keystone identifier;

    validating the codebook identifier by determining whether said codebook identifier is associated with said user identifier;

    upon successful validation of the codebook identifier, providing an image challenge comprising said keystone identifier located in a predetermined position of said image challenge and at least one first identifier arranged in a sequential order;

    receiving a passcode responsive to said image challenge from the client device; and

    authenticating said passcode by determining if said passcode comprises a second identifier corresponding to each first identifier in said image challenge.

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