1. According to the needs of epidemic prevention and control, it is convenient for the masses to travel in dispersion, and people are encouraged to have one yard per person and one yard per machine. At the same time, in order to solve the problem of accurate data of the application function, the offline application function is decided. After the function goes offline, it can only help others to apply, and the related parties that have applied for it are still retained, which will not affect the use of the masses.
2. Health code is a tracking and judging system of personal health information and activity information launched by COVID-19 for epidemic prevention and control. Individuals declare online by themselves, and generate a personal QR code after background audit, which can be declared once as an individual in a certain area of the electronic certificate.