Which of the following is the most secure method of authentication?

A.
Biometrics

B.
Username and password

C.
Anonymous

D.
Smart card

Explanation:
Biometrics is a method of authentication that uses physical characteristics, such as
fingerprints, scars, retinal patterns, and other forms of biophysical qualities to identify a user.
Nowadays, the usage of biometric devices such as hand scanners and retinal scanners is
becoming more common in the business environment. It is the most secure method of
authentication in comparison of smart card and biometrics authentication. Username and
security as a user can log on to the system anonymously and he is not prompted for credentials.