What type of control is a turnstile classified as?

A turnstile is classified as a physical control because it is a tangible, hardware-based device used to manage access to a secured area. Physical controls are designed to restrict, allow, or monitor access to facilities, systems, or assets and often include barriers, locks, security guards, and surveillance systems. A turnstile physically prevents entry unless a user has been authenticated, thereby serving as a barrier to unauthorized access.

This type of control is crucial in environments where security is a priority, as it ensures that only vetted individuals can enter specific areas. The presence of a turnstile can also act as a deterrent to unauthorized access attempts. In contrast, detective controls would involve mechanisms that identify and alert authorities to breaches, while corrective controls are used to restore systems after an incident. Technical controls pertain to digital or software-based security measures, such as firewalls or encryption. Therefore, the classification of a turnstile as a physical control is accurate given its role in the physical security infrastructure.