QR code has become a way of life for modern people. We use it to pay, pass and transmit information. More and more access control system use QR code, most of full height turnstiles use QR code way to recognition personnel. Usually we only need to integrated QR code scanner on the full height turnstile gate. Is it safe for visitors to access the QR code? Need to explain from two dimensions, whether the QR code recognition is safe? How to guarantee the security of the QR code that gives visitors access control rights?
Security of QR code recognition
On May 18, the 2020 code economy “war epidemic” report was released. According to statistics in the report, from January 23 to May 6, during the epidemic period, the total code consumption of government and enterprise individuals reached 140 billion times, with an average of 100 times per person using two-dimensional code. This data shows at least one problem. Two dimensional code recognition has been very popular. From the side, it also reflects that its security is guaranteed.
Why QR code recognition security is guaranteed, we need to start from its principle.
QR code is a pattern composed of data in the form of small black and white squares, in which the small black and white squares represent 1 and 0 of computer language binary. This special pattern can be easily recognized by computer / mobile phone and other digital devices, and can ensure 100% accuracy. If the paper QR code or QR code image is fuzzy, it will only be unrecognizable. If it can be recognized, the result will certainly not be wrong. This ensures the security of two-dimensional code recognition.
QR code is divided into static and dynamic QR code. The information contained in static QR code will not change, and there is no time and frequency limit. Just like a metal key, it can be used as long as it is not lost or damaged, but there is a risk of being copied or leaked. There is no difference between dynamic two-dimensional code and static two-dimensional code. The main difference is that it can modify the content of two-dimensional code by itself, and realize the personalized setting of two-dimensional code by modifying the content of QR code. Therefore, access control generally adopts dynamic two-dimensional code to improve security.
Security of QR code access control for visitors
For example, there are three ways for visitors to obtain two-dimensional code vouchers:
1. Invited visitors: get the two-dimensional code pass sent by the interviewees and scan the code by themselves.
2. Appointment visitors: through the corresponding official account /APP and other platforms, submit identity information, after the respondents check, the system sends invitation code to visitors, visitors with invitation code.
3. On site visitors: register information in the self-service visitor machine to obtain the two-dimensional code for self-service passage (without front desk operation, realized through the independent visitor machine), or register information with the assistance of the front desk to obtain the QR code for visitors (realized through the dual screen visitor plane with its own system).
No matter which way it is, the dynamic QR code with higher security is used for the QR code access control. The system can set the permission of the QR code by itself, which includes the use time and times, so as to avoid the security risk of the leakage or theft of the visitor’s QR code. At the same time, there are personnel access logs in the background of the system, which can make sure that people come to check and people go to have records. In this way, the access information of relevant personnel can be quickly checked out, and the whole process can be controlled.
To sum up, visitors’ QR code access control is very safe, you can rest assured to use. In fact, the biggest difference of intelligent access control (including two-dimensional code access control) is the background system. In addition to the most basic security, we also need visitors to have an efficient and noble visitor experience. The intelligent upgrade of office buildings can be realized by means of multi-body integration. For example, the world’s first two-dimensional code access control and elevator linkage system, visitors scan code through the access control at the same time, the elevator automatically welcome and deliver to the designated floor.