In 2012, the concept of mobile phone access control was introduced in China. In 2014, the first mobile phone door opener product was born. In 2015, mobile phone door access was favored by many top 100 real estate companies. In 2016, the mobile phone access control industry entered a stage of rapid development, and quickly evolved into a mobile phone shake. Various door opening methods, such as door opening, mobile phone QR code door opening, and mobile phone NFC door opening, have greatly promoted the development of mobile phone access control applications. Among them, the scanning code opening technology represented by QR code access control has gradually matured and is more widely used. In the industry market where various access control methods are mixed and new and old access control technologies coexist, the scanning code opening method has a huge potential for development space.

Different access control is suitable for different scenarios. The traditional card-based swiping access control is equivalent to "stand-alone access control", which is suitable for some scenarios where there are fewer people passing by and need to be managed by a special person, such as residential areas, administrative management, private offices, clubs and hotels. In such places, there are many disadvantages, such as difficulty in the management of card production and issuance, occupation of special personnel for management, lag in authority management, lack of intelligent functions, and inability to connect to peripheral equipment and functions of access control. 

In recent years, QR code access control has been continuously applied in various scenarios, and a scenario-based popularization path that conforms to high and low matching, public-private customization, and function selection has been explored. High and low matching, different from the independent function of traditional cards, the scanning code door opening device can be integrated with other different devices in the docking scene, and the functions of new and old devices are simple and smooth; public and private customization, scanning code door opening has excellent adaptability to large public places and private places Function selection, scanning the code to open the door to open attendance, car brakes, face, elevator control, meeting reservation and other functions docking, there is better function selectivity and scalability.

2D code access control scanning code to open the door has many of the above advantages, which determines that the use scenarios of the scan code to open the door are diverse, expandable, and controllable. Fast traffic flow and temporary traffic for different visitors to manage complex scenarios with large traffic and multiple permissions.

In subways, parks, schools, sports centers and other public places with very large crowds, scanning the code to open the door relies on mobile phones to realize advance reservation and entry, and can control the use of traffic in public places in real time, avoid congestion and accidents, and help the public in the current epidemic environment. Efforts for health and epidemic prevention.

Scanning the code to open the door is also suitable for places that pay attention to privacy, such as fitness, residential areas, apartments, banks, etc., using QR code live code technology, the QR code permission is limited in time and number of times, even if you take pictures and screenshots, you will not be able to pass through, which is greatly protected. User security and privacy.

It should be noted that the above applicable scenarios for scanning the door to open the door are based on the fact that the QR code access control itself needs to have strong technical and system support. "Single-machine access control" has changed from card to mobile phone, that's all, but to realize functions such as QR code reservation, platform real-time management, high-speed traffic, docking with peripheral smart devices, and integration of old and new access control data, systemicity and stability are the keys. The code to open the door is not a simple "single machine access control", the QR code access control should focus on the long-term intelligent experience.