You can use WeChat to scan, and you can scan the code directly with the scan that comes with the mobile phone WeChat. You can also install software that scans the QR code, and then open the scanning software to scan the QR code directly. Alipay can also scan.
Generally, you can use the bar code number of physical examination to search, and some physical examination centers also provide the function of inquiring the ID number. The new version of the health certificate is printed with a QR code, which can be scanned to know the name, ID number and health information of the holder.