Because further evaluation and judgment will be made according to each person's situation, those who do have risks will remain unchanged and corresponding control measures will be implemented. For those who judge that there is no risk, the community administrator can change the code and adjust it to a green code. According to the analysis and judgment of epidemic prevention and control big data, the health codes of people with different risk levels are marked with red team or yellow codes. The purpose of assigning codes is to accurately control risk personnel.

Health code:

Based on the actual real data, citizens or people who return to work after rework can generate personal QR codes through their 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.