What is the primary function of a mantrap system in physical security?

The primary function of a mantrap system in physical security is to allow only one person inside after identity verification. A mantrap is designed to enhance security by controlling entry into a secured area. This system typically consists of two interlocking doors, where the first door must close and be secured before the second door can open.

By ensuring that only one individual can enter the secure space at a time, mantraps help prevent unauthorized access and reduce the risk of tailgating, where an unauthorized person follows an authorized individual into a secure area. This controlled access is vital for protecting sensitive areas within facilities, as it allows for a check of identity and access rights before granting entry. Thus, the design of a mantrap effectively serves its purpose in maintaining a high level of physical security.