18 Feb Practice Test Question – Smartphone Authentication Mechanisms
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Which one of the following authentication mechanisms is generally not used in smartphone devices?
A. Facial recognition
B. Passcode
C. Fingerprint scanning
D. Retinal scanning
Correct Answer: D
Retinal scanning is a slow, intrusive technique that requires specialized hardware and cannot be performed with a standard smartphone. Smartphones do commonly use passcodes, fingerprint scanning and facial recognition for authentication.
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