In the following choices there is one that is a typical biometric characteristics that is not used to
uniquely authenticate an individual’s identity?

A.
Retina scans

B.
Iris scans

C.
Palm scans

D.
Skin scans

Explanation:
Answer A, B and C can be used to uniquely identify a person, but in the case of the
Skin, there are no unique characteristics that can differentiate two distinct individuals in an
acceptable accurate way. In the case of the IRIS and the Retina, there are not two of them equal.
In the case of the palm, every person has different marks on it. The skin is common to all and

does not have specific textures or marks to make it unique in comparison to another individual.