Mobile phones with the same number cannot apply for two health codes. Health code requires a real-name registration system to track personal health status online at any time. One mobile phone number and two health codes violate the original intention of health code release, which will lead to the failure of post-supervision of individuals. The introduction of health pass code aims to make the resumption of work more accurate, scientific and orderly.
The "health pass code" is based on real data, which can be generated by citizens or people who have returned to work through their own online declaration and background check. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city.