What is the principle of two-dimensional code visitor access control?

As an information storage and transmission technology, two-dimensional code is a plane geometric figure formed according to specific coding rules [1-4]. Two-dimensional code can express information in both horizontal and vertical directions at the same time, so it can express a lot of information in a small area.

Authorization management upgrades the traditional access control to mobile phone two-dimensional code access control, which can help operation managers enhance the flexibility of users and enhance the interaction between property and owners. You can also realize the functions of property repair and property payment through the mobile phone access control APP, and instantly improve the level of property service.

Access control is a control network system consisting of a CPU-based controller, an information collector and an electronic lock. Through the information reading and processing of the system, the automatic control of various door lock switches can be realized. According to the information reading mode, it can be divided into card type, induction type, image recognition type, eye iris recognition type and so on.

The working principle of fingerprint access control system is the principle of controlling by converting fingerprint collection into numbers. The working principle of face recognition file is the operation of human facial features ... The cost and price of access control system are different with different principles.

Want to ask the principle of QR code lock? With the mobile phone number as the unique ID card, register the authorized mobile phone number in the WeChat applet "code scanning access control", and the applet will generate a dynamic QR code. Fixed members can only enter and exit with the door opening password.

There is a constant stream of people entering and leaving the community and buildings every day, but in many places, the traditional registration method is still manual registration+access control registration.