Keycards are a common access control system that uses technology to control access to specific areas. Here’s a general overview of how keycards work:

Card production: First, the key card is issued by the system administrator or relevant authorized agency. This card usually contains information that identifies and authenticates the cardholder.

Storing information

Key cards may be embedded with technologies such as magnetic stripes, radio frequency identification chips (RFID), or integrated circuits (ICs) to store specific information. This information can include the cardholder’s identity, permission level, etc.

Reading card information

The access control system’s card reader communicates with the key card and reads the information stored on the card. Card readers usually complete this process through magnetic induction, radio frequency technology or contact reading.

Identity verification

After reading the card information, the system will verify the information on the card. This may include checking the validity of the card, whether the card has been revoked, and whether the permissions on the card are sufficient to access specific areas.

Access Control

If authentication is successful, the access control system will control the status of the door or door lock, allowing the cardholder to enter. If authentication fails or permissions are insufficient, the system denies access and may log related events.

Event logging

Key card systems typically log events each time the card is read, including successful and failed attempts. This helps security managers track access activity and detect potential security issues.

Card management

Key card systems require effective card management, including regularly updating card information, revoking lost or stolen cards, etc. This helps ensure the security and accuracy of the system.

Overall, key card systems enable convenient and secure access control by combining physical cards with electronic access control systems. This kind of system is widely used in commercial buildings, hotels, public transportation and other places.