The QR code access control system adopts cloud access control combined with the Internet , supports the linkage development of third-party platforms, and is continuously applied and developed in the construction of smart cities and smart communities. Smart cloud devices can be docked with mobile software to support convenient door opening and basic access management.Among them, the QR code access control system uses the scanning technology to solve the problem of non-community users access, and uses the QR code real-time code technology to generate personal unique identity encrypted information, which has a strong security mechanism. Nowadays, mobile phone applications are developing rapidly. The convenience and scalability of the QR code access control system provide a technical basis for realizing mobile phone scanning code opening.

QR code access control only needs to pick up the mobile phone to generate a QR code, and then scan the code with a QR code reader to enter the community. When there are friends and relatives visiting, you only need to generate a QR code and send it to your friends. You can enter after the access control terminal scans and recognizes successfully.

While QR code access control brings convenience, many people also doubt the security of QR code access control.

In fact, the QR code access control is safe enough. Visitors register visitor information by following the interviewee’s WeChat service account, and fill in the interviewee’s information. After the interviewee agrees to receive the visitor, the system will return the visitor’s visitor form,there is a QR code on it. Visitors who visit the respondent only need to scan the QR code on the visitor machine at the front desk of the respondent’s company to successfully register the visitor information. There is no need to register the visitor information again. Therefore, there is no need to worry about the security of QR code access control.