Turnstile door is mainly used to manage and control the flow of people, and regulate the passageway blocking equipment for pedestrians at the entrance and exit. I believe we are not unfamiliar with the security turnstile door or called turnstile gate. We can see it in the office building at work, in the subway station, and in the train or high-speed rail. Security turnstile door ensures the absolute safety of our daily life, work, study and other places, and improves the quality of our daily life. The disadvantages of traditional access control are as follows: 1.The safety factor is low. Access card is easy to copy and crack; 2. The convenience is low. Users need to carry the access card when they enter or leave, and sometimes they are faced with the embarrassment of losing or damaging the access card; 3. High failure rate. When using the card, the failure rate is high, and the later maintenance cost is high; 4. Management is difficult. Unable to carry out data-based operation, management personnel can not get what time, who has access control, unable to obtain relevant data, there are security risks. Intelligent management mode of QR code access control turnstile door system: Therefore, now there are many high-end office buildings in high-end residential areas will use the QR code access control turnstile door system. Compared with the traditional type of door entry, the QR code access control turnstile door system is more efficient and intelligent, and more secure than the traditional access control management. With the popularity of smart phones, the application of QR code access control turnstile door has been fully promoted. The QR code turnstile door is an upgraded product based on the traditional access control. In addition to the traditional door opening mode, the QR code scanning mode is added, which is more flexible and safer. So if we upgrade from the traditional turnstile gate to the QR code access control turnstile door, at present, the industry provides two modes, QR code card reader or QR code turnstile gate all-in-one machine. The main difference between the two modes is whether the access control controller is needed. If there is an access control system controller, only QR code card reader is needed for docking, otherwise, QR code card reader and access control system need to be integrated The controller is connected with the integrated QR code scanning equipment. The QR turnstile door is waterproof, sunscreen, cold resistant, high temperature resistant, anti pinch, anti bruise, safe and stable, and the locking and unlocking are accurate and fast. At present, office buildings, community entrance gates, hotel lobbies, campuses, scenic spots and other places have been used, and the demand is increasing, and the application scope is expanding.