Biometrics-based authentication uses an individual physical traits to verify his or her identity. It is like your own personal password that cannot be forgotten, lost, or stolen. Users no longer need to remember the answers to security questions, nor do they need to carry a separate single-purpose hardware token. Biometrics data is intrinsically connected to a person. It is the What the person factor(biometrics), versus a what a person has factor(e.g., token or phone), versus a What a person knows factor(e.g., password, PIN). It cannot be forgotten or easily compromised.