Computer Science for IGCSE & O level - The Internet And Its Uses (Section 13 - No. 35)
Which of the following is a disadvantage of retina scans as a biometric method?
It is very slow.
It is not very secure.
It is a relatively cheap method.
It is easily affected by changes in lighting
Explanation
Retina scans take a relatively long time, about 10-15 seconds to totally scan.
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