A door access control system is a security mechanism designed to manage and restrict who can enter a building, a specific room, or a restricted area, and at what times. Unlike traditional locks and keys, which offer limited control and auditing capabilities, access control systems provide a higher level of security, flexibility, and accountability. By replacing mechanical keys with electronic credentials, these systems allow administrators to easily grant, revoke, and monitor access rights for individuals or groups. How Door Access Control Systems Work T he fundamental operation of a door access control system involves verifying a user's identity and permissions before allowing entry. The process typically follows these steps: Authentication: A user presents a credential (such as a key card, key fob, PIN code, or biometric scan) to a reader at the entry point. Verification: The reader captures the credential data and transmits it to the system's central control panel (th...
