Table 2. Biometric modalities comparison [31]

Information Universality Uniqueness Permanence Collect-ability Acceptability Performance
ADN Yes Yes Yes Weak Weak *****
Blood Yes No Yes Weak No *
Approach Yes No Weak Yes Yes ***
keystroke dynamics Yes Yes Weak Yes Yes ****
Voice Yes Yes Weak Yes Yes ****
Iris Yes Yes Yes Yes Weak *****
Retina Yes Yes Yes Yes Weak *****
Face Yes No Weak Yes Yes ****
Hand geometry Yes No Yes Yes Yes ****
Ear Yes Yes Yes Yes Yes *****
Fingerprint Yes Yes Yes Yes Average ****