A potential problem related to the physical installation of the Iris Scanner in regards to the usage of the iris
pattern within a biometric system is:

A.
Concern that the laser beam may cause eye damage.

B.
The iris pattern changes as a person grows older.

C.
There is a relatively high rate of false accepts.

D.
The optical unit must be positioned so that the sun does not shine into the aperture.

Explanation:
The optical unit of the iris pattern biometric system must be positioned so that the sun does not shine into the
aperture.
Incorrect Answers:
A: Iris recognition systems do not use laser like beams.
B: With iris scans, the kind of errors that can occur during the authentication process is reduced because the
iris remains constant through adulthood.
C: Extreme resistance to false matching is an advantage of iris recognition.
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 191
https://en.wikipedia.org/wiki/Iris_recognition