The meaning of a line of health code. The health code is based on the actual real data, which can be generated by citizens or people who have returned to work on their own online declaration and background audit.
As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.
Accurate to the inside of the city, digitizing the citizens' travel inside the city is more convenient for the command center to accurately query the citizens' action trajectory at any time, especially for the key investigations such as close contact, high return, isolation, red and yellow codes, and floating personnel. If an epidemic situation is found, the system can immediately start the immigration clearance for 14 days, with high accuracy and speed, and the data outperforms the virus.