When applying for a health code, you will be required to fill in personal identity information, work information, recent medical treatment place, contact with suspected or confirmed personnel, your own physical health status, mobile phone number, etc. And the background will calculate according to this series of data, and then judge the applicant's status.
Because the health code is yellow code or red code, you need to isolate it at home. How many days will it take to turn into a green code when punching in, so when punching in, you will turn on the GPS to get your geographical location information.