When used with an access control vestibule, which of the following would provide the best prevention against tailgating?

Rationale

Security guard

A security guard stationed at the access control vestibule provides the most effective prevention against tailgating by physically verifying each person's identity and ensuring only authorized individuals enter the restricted area.

A (PIN) YOUR ANSWER

While a Personal Identification Number (PIN) adds an additional layer of security, it can be shared or compromised, potentially enabling unauthorized individuals to tailgate behind an authorized user once the PIN is entered.

B (Access card) YOUR ANSWER

Access cards are convenient for granting entry but do not prevent tailgating on their own. An unauthorized person can slip in behind a legitimate cardholder before the door closes, bypassing the access control measures.

C (Security guard) CORRECT

Having a security guard present at the access control vestibule allows for immediate visual verification of individuals seeking entry. The guard can physically intervene to stop unauthorized access attempts and ensure strict adherence to security protocols.

D (CCTV) YOUR ANSWER

Closed-circuit television (CCTV) systems are valuable for monitoring and recording activities, but they are reactive rather than proactive in preventing tailgating. CCTV footage can help identify unauthorized access after the fact but does not physically deter or stop tailgating in real time.

Conclusion

In the context of preventing tailgating at an access control vestibule, the presence of a security guard is the most effective measure. While technologies like PINs, access cards, and CCTV play important roles in overall security, a vigilant security guard provides immediate, hands-on enforcement of access policies, reducing the risk of unauthorized entry through tailgating.

When used with an access control vestibule, which of the following would provide the best prevention against tailgating?

Security guard

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