Which of the following biometrics methods provides the HIGHEST accuracy and is LEAST accepted by users?
A.
Palm Scan
B.
Hand Geometry
C.
Fingerprint
D.
Retina scan
Explanation:
A system that reads a person’s retina scans the blood-vessel pattern of the retina on the backside of the
eyeball. This pattern has shown to be extremely unique between different people. A camera is used to project a
beam inside the eye and capture the pattern and compare it to a reference file recorded previously.
Acceptability in terms of biometric systems refers to considerations of privacy, invasiveness, and psychological
and physical comfort when using the system. For example, a concern with retina scanning systems may be the
exchange of body fluids on the eyepiece or the feeling that a retinal scan could be harmful to the eye. Another
concern would be the retinal pattern that could reveal changes in a person’s health, such as diabetes or high
blood pressure.
Incorrect Answers:
A: While requiring contact with a surface shared by others, a palm scan is generally considered more
acceptable than sharing a surface with other parts of the anatomy. Therefore, this answer is incorrect.
B: A Hand Geometry scan is less accurate and more acceptable than a retina scan. Therefore, this answer is
incorrect.
C: A fingerprint scan is more acceptable to users than a retina scan. Users are much more likely to prefer
placing their fingers on a fingerprint scanner than looking into a retina scanner. Therefore, this answer is
incorrect.Krutz, Ronald L. and Russell Dean Vines, The CISSP and CAP Prep Guide: Mastering CISSP and CAP, Wiley
Publishing, Indianapolis, 2007, p. 60
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 191