In terms of the order of effectiveness, which of the following technologies is the least effective?

A.
Voice pattern

B.
Signature

C.
Keystroke pattern

D.
Hand geometry

Explanation:
The order of effectiveness has not changed for a few years. It is still the same today
as it was three years ago. The list below present them from most effective to list
effective:
Iris scan
Retina scan
Fingerprint
Hand geometry
Voice pattern
Keystroke pattern
Signature