Zhong Yi is not a top programmer, but he is the best designer who is dying in the crisis, which provides convenience and health certificate for our trip, which is also a new milestone in the country.
Health regulations play an important role in epidemic prevention and control. Its working principle is based on "positioning", which includes both base station positioning, satellite positioning and WIFI positioning. Even if the phone is turned off or the card is unplugged, it will not affect the location of the phone. On the basis of mobile phone positioning, big data analysis is carried out through consumption records, ride records, flight records, filling in travel information and scanning scene positions. Suppose you go to a high-risk area, the color of the health code will turn red, which has made great contributions to effectively blocking the transmission chain.