Based on real data, the health code can be declared online by citizens or returned employees themselves, and a QR code is formed after background review. The QR code can be used as a local electronic certificate, and it only needs to be declared once, which is valid for the whole city.
When the health code turns black, you can start the flight mode, turn on the mobile phone to locate, then turn off the flight mode, refresh the network data again, and then open the health code page. At this point, if the health code turns black due to network problems, the green code can be restored in a few minutes. Health code can effectively manage the flow of people, improve the security efficiency of crowded places such as shopping malls and subways, and avoid too many people contacting or gathering. ?
Functional characteristics of health codes: Without changing the existing local health codes, cross-regional mutual recognition function can be added to local health codes according to epidemic prevention information in different regions.
The local health code is connected with the comprehensive epidemic prevention information code of China, and is converted through the intermediary of the comprehensive epidemic prevention information code of China, thus completing the mutual recognition of cross-regional health codes; If there is no local health code, you can directly use the epidemic prevention information code to complete mutual recognition between different regions according to the local epidemic prevention information.