How does RFID-based access control work?

RFID (Radio Frequency Identification) is a technology commonly used in access control systems.

1. RFID credentials: Each individual authorized for access is provided with an RFID credential, such as an access card or key fob. These credentials contain a unique identifier, which is associated with the individual's access permissions in the system.

2. RFID readers: RFID readers are installed at entry points throughout the building. These readers emit radio frequency signals and can detect nearby RFID credentials.


3. Authentication process: When an individual approaches an entry point, they present their RFID credential to the reader. The reader emits a radio frequency signal, and if a compatible RFID credential is within range, it will respond with its unique identifier.


4. Verification: The RFID reader captures the response from the RFID credential and sends it to the access control system's control panel or server for verification.


5. Access control decision: The control panel compares the received RFID credential identifier with the authorized user database to determine if the individual is allowed access to the requested area.


6. Granting or denying access: Based on the verification result, the access control system sends a signal to the locking mechanism associated with the entry point. If access is granted, the locking mechanism is released, allowing the individual to enter. If access is denied, the locking mechanism remains secured.


7. Logging and monitoring: The access control system keeps a record of access events, including the date, time, and identity of the individuals who gained or were denied access. This information can be useful for security purposes and audit trails.


It's worth noting that some RFID-based access control systems may incorporate additional security measures, such as encryption or two-factor authentication, to enhance the overall security of the system. These measures add an extra layer of protection against unauthorized access and cloning of RFID credentials.

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