How Does an RFID Access Control System Work?
Step 1: Components of the System
As already mentioned earlier, the RFID access control system consists of the following components: RFID tags, antennas, an RFID reader, and a transceiver. The RFID tags are attached to key cards or key fobs and hold unique identification data. The antennas receive signals from the RFID tags, and the reader reads the information stored on the tags. The transceiver enables communication between the reader and the access control system.
Step 2: Approaching the Access Point
The reader emits a signal when a user approaches an access point, such as a door, with their RFID credential (a key card or key fob).
Step 3: Activating the RFID Tag
The signal from the reader activates the RFID tag on the user’s credential. The tag contains a microchip that stores data, such as an identification number or access credentials.
Step 4: Data Transmission
Once the RFID tag is activated, it sends the stored data back to the reader using radiofrequency waves. The reader captures this data and prepares it for further processing.
Step 5: Data Verification
The reader cross-references the data received from the tag with the access control system’s database. It checks if the stored data matches any authorized credentials or identification numbers.
Step 6: Authorization and Access Granting
If the data on the RFID tag matches the information in the database, the access control system grants access. It sends a signal to unlock the door or gate, allowing the user to enter. The process happens almost instantly.
Step 7: Access Control Management
The RFID access control system can be managed through access control software. This software handles access approvals, manages user permissions, and tracks access events. It enables administrators to set specific access levels and permissions for different users or groups.
Step 8: Security Considerations
It’s important to note that RFID access control systems can have security vulnerabilities. RFID cards for access control can be subject to hacking attempts due to signals’ potential interception or cloning. Implementing additional security measures, such as encryption and authentication protocols, is crucial to mitigate these risks.