A financial-services firm is redesigning the single entrance to its on-premises data center. Senior management insists on a control that (1) physically prevents an unauthorized person from tailgating behind an authorized user and (2) forces every individual to present an RFID badge so that access events are logged for later auditing. Which physical access control BEST meets these requirements?
Reinforced one-way reflective glass panels around the lobby
A security-camera system with motion detection covering the vestibule
A two-door mantrap equipped with RFID badge readers on both doors
Fixed bollards installed in front of the facility entrance
A dual-door mantrap satisfies both conditions. The first door must close before the second will unlock, so only one person can pass at a time. Each door can be fitted with an RFID or other credential reader, ensuring that every individual must badge in and creating an auditable log of who entered.
Bollards protect against vehicular intrusion but do nothing to stop or record foot traffic. Security cameras can record tailgating but cannot physically block it. Reflective glass improves visual privacy and blast protection, yet it neither forces individual badging nor prevents someone from slipping in after another person.
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Why doesn’t a security camera system prevent tailgating?