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Digital communication biometric authentication

  • US 8,533,485 B1
  • Filed: 10/13/2005
  • Issued: 09/10/2013
  • Est. Priority Date: 10/13/2005
  • Status: Active Grant
First Claim
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1. A method for authenticating a digital communication, the method comprising:

  • responsive to detecting a second end user system receiving a first instant message from a first end user system, transmitting, by an authenticating apparatus, a challenge to the first end user system, wherein the challenge requests a user of the first end user system to speak a phrase including a predetermined portion of a second instant message previously exchanged between the first end user system and the second end user system, the predetermined portion of the second instant message including N integer words of the second instant message;

    responsive to receiving a challenge response including response data indicative of the user of the first end user system speaking the phrase, sending the response data to a third party service provider for authentication;

    after receiving the challenge response, saving the predetermined portion of the second instant message as an entry in a used phrase database; and

    receiving an authentication from the third party service provider that the response data matches a template.

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