Health codes are based on actual data and can be generated by citizens or people who have returned to work through online declaration and background audit.
As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly. The epidemic prevention health code of the national government service platform integrates the relevant information of the communication big data travel card, and can display the travel information of users, whether they have been to medium and high-risk areas, etc. To help the health code pass a code.