Access control and attendance are important applications of RFID technology in personnel management. Access cards and one card systems are widely used in campuses, enterprises, and other places, achieving various functions such as identity authentication, payment, and security management through a single card. This system not only simplifies entry and exit procedures, improves work efficiency, but also effectively provides security protection. When personnel wear RF cards packaged in the size of ID cards to enter, and there is a reader at the entrance and exit, personnel can automatically identify their identity when entering and exiting, and there will be an alarm for illegal intrusion. In areas with high security requirements, other identification methods such as fingerprints, palm prints, and facial features can also be combined to store radio frequency cards.