Figure 1. Various biometric modalities: Fingerprints, Speech, Handwriting, Facial Recognition, Hand Geometry and Chemical Biometrics

From

Biometric-based Attendance System: LASU Epe Campus as Case Study

O. Shoewu, N.T. Makanjuola, S.O. Olatinwo

American Journal of Computing Research Repository. 2014, 2(1), 8-14 doi:10.12691/ajcrr-2-1-2