OVERVIEW
     What is Biometrics?
     Why Biometrics?
     General Biometric System
     Different types of Biometrics
     Uses and Applications of Biometrics
     Challenges to Biometrics
    WHAT IS BIOMETRICS?
     Biometrics is the science of verifying and establishing the 
     identity of an individual through physiological features or 
     behavioral traits.
    WHAT IS BIOMETRICS?
     Physiological and Behavioral characteristics:
     Physiological:
       - Fingerprint
       - Face
       - Iris
       - Hand Geometry
    o Behavioral:
       - Voice
       - Keyboard strokes
       - Signature
    WHY BIOMETRICS?
     With numerous devices, traditional paradigm of user name 
      and password based scenarios are not practical
     Only authorized users should have access to data and 
      services
     Biometrics provide an unobtrusive and convenient 
      authentication mechanism
     Advantages of biometrics
       Uniqueness
       No need to remember passwords or carry tokens
       Biometrics cannot be lost, stolen or forgotten
       More secure than a long password
       Solves repudiation problem
       Not susceptible to traditional dictionary attacks
     GENERAL BIOMETRIC SYSTEM
        Determine or authenticate identity
        Identification Systems:
         Who am I?
         Determine Identity
        Verification Systems:
         Am I who I claim to be?
         Authenticate Identity