What is the primary function of an access control system?

The primary function of an access control system is to restrict entry based on user credentials. Access control systems are designed to ensure that only authorized individuals can enter specific areas or access certain resources, thereby enhancing security. This is accomplished through various components such as key cards, biometric scanners, or PIN codes, which verify the identity of individuals seeking entry.

The emphasis on restricting access is crucial in many environments, particularly in facilities that store sensitive information or have restricted areas, as it helps prevent unauthorized access and potential security breaches. While other systems, such as video monitoring, alarm management, and motion detection, are vital for comprehensive security, they serve different purposes. For instance, they may provide situational awareness or alert staff to threats, but they do not specifically control entry like an access control system does.