The application of QR code recognition in access control systems
With the rapid development of smartphones, applications such as scanning QR codes to add friends and scanning QR codes to pay have been widely used. The convenience of QR codes has been quickly accepted by people. QR codes can be seen everywhere in shopping malls and supermarkets in China. Even the vegetable market has basically achieved full coverage. In the era when QR codes can be seen everywhere, where did the QR codes come from, and what are the rules? Let us explore it together. First, let’s first understand the definition of QR code: （quoted from Wikipedia） A QR code (abbreviated from Quick Response…