1, a code pass refers to the health code under the epidemic, is based on personal health data, from personal declaration, backstage big data information comparison generated by the personal exclusive two-dimensional code, to help people across the province safe and orderly flow, normal resumption of work, production and school.

2, the main function: a code pass is based on personal health data, personal declaration by the individual, the background of big data information comparison generated by the personal exclusive two-dimensional code. Every time a citizen sweeps the code, the health code will display personal identification information, such as ID card number, name, nucleic acid test results; risk level information, such as red code for high-risk, yellow code for medium-risk, and green code for low-risk or no risk.

3, color classification: a code pass information from the national convergence of data, after the prevention and control rules and data modeling, the background comparison, to determine the low, medium and high three new coronary pneumonia risk level, and to green, yellow and red colors are displayed.