The mobile phone is turned off, and big data can't capture the personal activity track, so there is a problem of data flooding. It is suggested that the mobile phone with ID number should not be turned off, and complaints should be made in time after being assigned yellow code.
The application scope of health code covers community management, resumption of business, transportation, starting school, drug purchase registration, supermarkets and shopping malls, which can help communities, enterprises and schools to do key work such as epidemic prevention management and epidemic control. In the prevention and control of epidemic situation and resumption of production, health code can realize efficient personnel flow management, improve the inspection efficiency of office buildings, shopping malls, subways, railway stations and other crowded places, and avoid excessive personnel contact and gathering.