Multimodal Biometric Fusion:
Combining Multiple Biometrics for Security

Combining multiple biometrics dramatically improves security and accuracy. Face + Voice fusion achieves 99.95% accuracy versus 99.5% for face alone.

Fusion Levels

Score-level fusion combines match scores from independent matchers. Decision-level fusion votes on accept/reject. Weighted combinations account for modality reliability.

Practical Combinations

Face + Fingerprint for physical access. Face + Voice for remote verification. Face + Behavioral for continuous authentication.