2D code access control application scenario
      2D code access control is a very popular way to open doors in smart phone two-dimensional code access control system. It can record visitors' visiting function, which is not only safe and efficient, but also used in many large office buildings, high-end living quarters, government office buildings, gyms, etc., and the response is good.

2D code access control principle
      2D code access control is based on mobile Internet technology, which realizes the fine, real-time and trackable management of people's movement and trajectory in the system by using new technologies such as Internet of Things, cloud computing and virtualization.
      2D code access control uses 2D code as the medium and carrier of personnel identification. The system assigns an encrypted QR code to each user in real time. The user can open the corresponding door lock by scanning the QR code on the access control device. Replacing the traditional physical access card with the mobile phone QR code is convenient to carry and solves the pain point of losing when you forget to bring your card when you go out.

Advantages and characteristics of QR code access control
       1) The reading head of two-dimensional code access control adopts dynamic two-dimensional code (valid time and times can be set) to prevent others from copying and stealing.
       2) The user generates a two-dimensional code through the mobile phone APP or applet. The two-dimensional code is encrypted and cannot be copied and printed, and the two-dimensional code is dynamic. It is considered invalid if it is overtime or over-time, and there is a buzzer prompt.
       3) The scanning head of the two-dimensional code access control can recognize two-dimensional codes, IC cards, NFC of mobile phones, ID cards and other authentication methods. It is very convenient and convenient to upgrade the entrance guard in the old community, and it does not occupy the storage space of the entrance guard board.
       4) The scanning head output mode commonly used in the two-dimensional code access control industry supports USB, serial port, TTL, Wigan protocol, Bluetooth and 2.4G communication, etc., and is equipped with NFC card swiping, OCR identification and other functions. Merchants can customize the scanning head output mode and optional functions according to the requirements of two-dimensional code access control.
       5) Two-dimensional code access control is easy to use. Users only need to download and install WeChat app to pay attention to the WeChat official account or small program of the two-dimensional code access control system, and bind the frequent access control, so they can easily enter and exit with only two-dimensional code. The use of two-dimensional code access control makes people's life more convenient, the access management of office buildings is more intelligent, and property managers and users do not need to re-learn.

      Shenzhen MASUNG brand is a professional supplier and manufacturer of two-dimensional code scanning heads, providing solutions for the global two-dimensional code access control industry.

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