The function of health QR code in prevention and control measures in novel coronavirus mainly lies in

A health QR code is just like an electronic ID QR code. Its function is not only to report personal health, but also to master your action track. For example, entering the supermarket, taking the bus, subway, plane and train will all be required to scan the health green code. The health pass code is directly related to the risk level of the area where the code holder is located.