QR code intelligent access control terminal

With the routine of community and office management, intelligent access control system has become more and more popular. QR code intelligent access control terminal is an access control system with QR code as the identification carrier. It encodes the traditional card information into a QR code graphic, and reads and verifies the QR code picture through an authenticated mobile phone. All door opening actions, door opening methods, greeting switching, graphic display, etc. are controlled by the cloud. After scanning the QR code, the mobile phone wechat will send it to the cloud. After the cloud processing is completed, it will be sent to the terminal for completion. The mobile terminal does not save the user's private information, but uploads the authentication information left to the cloud app + applet during cloud registration. All authentication and pairing information is saved in the cloud, and the terminal is not easy to crack