ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

A mantrap is a small vestibule with two interlocking doors. Each door is controlled by an access mechanism (such as a badge reader or biometric scanner), and only one door can be unlocked at any moment. An individual must authenticate to open the first door, step inside, let it close, then authenticate again to open the second door. Because the space holds only one person at a time and the second door will not open until the first is secured, mantraps are specifically designed to prevent piggybacking or tailgating into sensitive areas.

Closed-circuit television (CCTV) provides monitoring but does not physically stop unauthorized entry. A biometric time clock records attendance but does not control access or prevent multiple people from entering together. Visitor logbooks and badges establish accountability but rely on human enforcement and do not enforce single-person entry. Therefore, the mantrap is the only option that directly meets the stated requirement.