Systems and algorithms for biometric authentication without a previously stored biometric template

Abstract

A system and algorithms to authenticate a person where a system only has some standard personal text data about the person, and cannot have a real biometric template obtained using an enrollment procedure. The authentication allows access to restricted resources by the person. This method is especially useful when it is used as an auxiliary authentication service with other methods such as password or Callback that dramatically lower the chances for an imposter.

What is claimed is: 
     
         1 . A method for authenticating a user comprising:
 receiving a biometric input from said user;   extracting at least one biometric-based parameter from said biometric input;   comparing said at least one biometric-based parameter to a corresponding biometric based parameter of said user, wherein said corresponding biometric based parameter is not based on a pre-stored biometric template, said biometric template is a biometric signature of said user; and   authenticating said user based on said comparison.   
     
     
         2 . The method of  claim 1 , wherein extracting said at least one biometric-based parameter results in a probability function, said probability function to define the estimated is probabilities of said biometric-based parameter to match a set of ranges of values. 
     
     
         3 . The method of  claim 1 , wherein said biometric input contains audio related data. 
     
     
         4 . The method of  claim 1 , wherein said biometric input contains image related data. 
     
     
         5 . The method of  claim 1 , wherein said biometric input contains video related data. 
     
     
         6 . A system for authenticating a user comprising:
 at least one data terminal to receive biometric input of said user;   at least one extraction unit to extract at least one biometric-based parameter from said biometric input;   a storage unit to store at least one personal data parameter of the user;   at least one authentication unit to authenticate said user based on comparison of said at least one extracted biometric-based parameter to a corresponding known user data parameter in said personal details record,
 wherein said known user parameter is not based on a pre-stored biometric template, said biometric template is a biometric signature of said user; and 
   an access control management unit to control the access of said user to at least one restricted resource based on the result of said authentication unit.   
     
     
         7 . The system of  claim 6 , wherein extraction of said at least one biometric-based parameter results in a probability function, said probability function to define the estimated probability of said biometric-based parameter to match a set of ranges of values. 
     
     
         8 . The system of  claim 6 , wherein said biometric input contains audio related data. 
     
     
         9 . The system of  claim 6 , wherein said biometric input contains image related data. 
     
     
         10 . The system of  claim 6 , wherein said biometric input contains video related data.