Two-dimensional code traceability is a technology and method to record the information of product supply, production, transportation, sales and agency, as well as users and after-sales through two-dimensional code, so that all product information can be traced, queried and traceable in the whole product life cycle, and the system can be controlled.
Health code is a personal two-dimensional code based on actual real data, which is 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.