What is the main purpose of an access control system?

What is the main purpose of an access control system?

• A. Block entry by unauthorized persons
• B. Monitor environment conditions
• C. Record video for later review
• D. Control lighting remotely during outages

Answer: (A)

Access control is about who can enter which areas and when. Its main purpose is to prevent unauthorized entry by validating credentials (like badges, PINs, or biometrics) and then granting or denying access accordingly. Doors may unlock for authorized users and the system can log each attempt for security review, creating an audit trail. While other building functions exist—such as monitoring environmental conditions, recording video, or controlling lighting during outages—they serve different goals. Those features are important for safety, security monitoring, and facility management, but they’re not the core job of an access control system, which is focused on restricting entry to protect restricted spaces.

Access control is about who can enter which areas and when. Its main purpose is to prevent unauthorized entry by validating credentials (like badges, PINs, or biometrics) and then granting or denying access accordingly. Doors may unlock for authorized users and the system can log each attempt for security review, creating an audit trail. While other building functions exist—such as monitoring environmental conditions, recording video, or controlling lighting during outages—they serve different goals. Those features are important for safety, security monitoring, and facility management, but they’re not the core job of an access control system, which is focused on restricting entry to protect restricted spaces.