What is the purpose of a secure vestibule in physical security?

A secure vestibule is specifically designed to provide an additional layer of security before entering a facility. This area acts as a buffer zone between the outside environment and the secured interior of a building. By having this space, an organization can control access more effectively and reduce the risk of unauthorized entry.

When individuals enter a secure vestibule, they may have to go through identification checks or other security measures before gaining access to the main facility. This ensures that only authorized personnel can proceed while helping to prevent potential security breaches. The presence of a secure vestibule can also deter attempts at forced entry, as it presents an extra barrier that must be navigated.

The other options, while they may describe areas or functions within a facility, do not align with the primary intention of a secure vestibule, which fundamentally focuses on enhancing security measures at the point of entry.