Unit3: Biometrics

1. Universality
2. Uniquness
3. Stability
4. Collectability
5. Performance
6. Acceptability
7. Forgery resistance

Attachments:

• Biometric System Modules

1. Data acquisition module
2. Feature extraction module
3. Matching module
   1. Identification System compare that with all users
   2. Verification System checks the user biometric data
4. Decision module
5. Storage module

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

Attachments:

• Untitled

1. detecting if the biometric presented is living tissue

1. Optical fingerprint sensors
2. Ultrasound fingerprint sensors
3. Chip-based fingerprint sensors

1. @ Enrollement, user can enter false info
2. DOS
3. Circumvention attack
4. coercion attack
5. Collusion attack
6. covert acquisition