N-dimensional biometric security system

• US 20020104027A1
• Filed: 01/31/2002
• Published: 08/01/2002
• Est. Priority Date: 01/31/2001
• Status: Abandoned Application

• Current Assignee: Ibiometrics Incorporated
• Original Assignee: Ibiometrics Incorporated
• Inventors: Skerpac, Valene
• Application Number:
  US10/062,799
• Publication Number:
  US 20020104027A1
• Time in Patent Office: Days
• US Class Current: 713/202
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G10L 17/24 the user being prompted to utter a password or a predefined phrase

Abstract

A security system and method are provided that relies, in one embodiment, on speech recognition to not only identify but also to validate a user. In use, the system requires a user to initially input information representative of the user at a station. A responsive signal is then generated and validated as representative of the user. Thereafter, a randomly generated challenge phrase appears at the station for the user to speak in response to validation of generated signal. The user then speaks the randomly generated challenge phrase and generates a second signal representative of the spoken response to the challenge phrase. This second signal is then processed for determining what was actually spoken as well as for the voice characteristics of the speaking voice. If a match is made for the two parameters, identification and validation of the user is complete and access is given. Changing the challenge phrase in a randomly generated manner reduces the possibility of an intruder impersonating the voice of a true user.

Claims

1. A N-dimensional biometric security system comprising

a station for receiving input information from a user representative of the user and generating a responsive signal thereto;

a first data base having a plurality of words and language rules for generating one-time challenge phrases corresponding to the user and a session access request therein;

a second data base having biometric models of the users therein; and

a controller to receive and validate said signal as representative of the user, said controller communicating with said first data base for delivering a randomly generated challenge phrase at said station for the user to speak in response to validation of said signal, and said controller communicating with said station to receive and validate a spoken response to said selected challenge phrase as representative of the user.

2. A method of identifying and validating a user comprising the steps of

having a user initially input information representative of the user at a station;

generating a signal responsive to the information;

receiving and validating the signal as representative of the user;

thereafter delivering a randomly generated challenge phrase at said station for the user to speak in response to validation of said signal;

having said user speak the randomly generated challenge phrase and generating a second signal representative of the spoken response to said challenge phrase; and

thereafter receiving and validating the second signal as representative of the user.