Which of the following physical access controls effectively reduces the risk of piggybacking?

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Which of the following physical access controls effectively reduces the risk of piggybacking?

A.
Biometric door locks

B.
Combination door locks

C.
Deadman doors

D.
Bolting door locks

Explanation:
Deadman doors use a pair of doors. For the second door to operate, the first entry door must close
and lock with only one person permitted in the holding areA. This effectively reduces the risk of
piggybacking. An individual’s unique body features such as voice, retina, fingerprint or signature
activate biometric door locks; however, they do not prevent or reduce the risk of piggybacking.
Combination door locks, also known as cipher locks, use a numeric key pad or dial to gain entry.
They do notprevent or reduce the risk of piggybacking since unauthorized individuals may still gain
access to the processing center. Bolting door locks require the traditional metal key to gain entry.
Unauthorized individuals could still gain access to the processing center along with an authorized
individual.

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