The QR access control APP relies on the automatic identification technology of the two-dimensional code. The residents of the community only need to brush the QR code in the scanning window. The successful scanning can realize the door clearance from the community gate to the building access control and then to the users door. It is worth mentioning that in the process of scanning code verification, the residents of the community make full use of the intelligent access control system code-keeping function and the excellent reading performance of the mobile phone barcode scanner to realize the real-name authentication and entry and exit records of all the entry and exit personnel in the community. Greatly improve the level of security. With the increasing awareness of user safety and insurance in the future, the scope of application of this program will become wider and wider.