Many communities in Sichuan have issued reminders that citizens can prepare health codes in advance when they go out for nucleic acid testing, and it is best to take screenshots with their mobile phones in advance. This shows that the screenshot of Sichuan health code can be scanned for nucleic acid.
The health code is based on real data, which is declared by citizens on the Internet. After background review, the personal QR code can be generated. 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.