Unit3: Biometrics

Unit3: Biometrics

1. Verification System

2. Identification System

3. Properties of a biometric feature

   • Universality
   • Uniquness
   • Stability
   • Collectability
   • Performance
   • Acceptability
   • Forgery resistance

4. Static

5. Dynamic

6. biometric sample

7. reference template

8. architecture of a biometric system

   • Biometric System Modules
   • Data acquisition module
   • Feature extraction module
   • Matching module
     • Identification System compare that with all users
     • Verification System checks the user biometric data
   • Decision module
   • Storage module

9. Tolerance Threshold

   • Specifies the level of matching accepted
   • Accuracy Metrics
     • false match rate
       • Probability that an individual template provide a match for a different individual
       • False Acceptance rate: an imposter to authenticate
     • false non-match rate
       • False Rejection Rate
     • failure-to-enroll rate
       • Proporition of users from total that failed to have repeatble templates
     • Equal Error Rate : FMR = FNMER

10. Biometric Systems

    • Untitled

11. Properties of a good biometric sensor

    • detecting if the biometric presented is living tissue

12. Fingerprint Recognition : Products

    • Optical fingerprint sensors
    • Ultrasound fingerprint sensors
    • Chip-based fingerprint sensors

13. Attacks on biometric systems

    • @ Enrollement, user can enter false info
    • DOS
    • Circumvention attack
    • coercion attack
    • Collusion attack
    • covert acquisition