What is an effective access control system management system?

Xin 'an, Chengdu: The installation of access control system effectively prevents strangers from entering and ensures the safety of internal personnel. Now access control system is widely used in residential areas, office buildings, villas and other fields. Access control system manages people's access rights. Some simple access control systems can realize the access function of authorized personnel, while networked access control systems can check the access records of authorized personnel, and some access control systems can realize the attendance function.