A financial institution is concerned about tailgating after several reports of unknown individuals following employees through the main entrance. Management wants a solution that forces each person to authenticate before the inner door unlocks and physically prevents more than one person from entering at a time. Which physical access security control will BEST meet this requirement?
Require employees to swipe a badge on a single-door reader
Place bollards in front of the building entrance
Add additional CCTV cameras focused on the entrance
Install an access control vestibule between the lobby and the secure area
An access control vestibule-often called a mantrap-places two interlocked doors or turnstiles in series. The first door must close and an individual must present valid credentials before the second door unlocks, ensuring only one authenticated person enters at a time and effectively stopping tailgating.
Video surveillance only records events; it does not physically block unauthorized followers.
Badge readers at a single door let someone hold the door open, so they do not reliably stop tailgating.
Bollards protect against vehicle ramming, not unauthorized foot traffic.
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What is an access control vestibule, and how does it prevent tailgating?
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Why wouldn’t video surveillance or badge readers alone prevent tailgating?
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When are bollards used, and why are they not suitable for preventing tailgating?