What are the main differences between retina scans and iris scans?

A.
Retina scans are not invasive and iris scans are

B.
Iris scans invade a person�s privacy and retina scans do not

C.
Iris scans change depending on the person�s health, retina scans are stable

D.
Retina scans change depending on the person�s health, iris scans are stable

Explanation:
D is the correct answer because the blood vessels in the retina may change depending on certain health conditions.

Incorrect Answers and Explanations: A, B, and C: A is incorrect because Retina scans are invasivethey can relay user health information. B is incorrect because Iris scans are not invasive. C is incorrect because Iris scans remain (comparatively) stable regarding the general health of the user attempting access.