"Health Code" is an electronic health certificate based on real data. Citizens or people who return to work after rework can declare online, and generate personal QR code after background review. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city, and the validity period is generally 1-2 years.
Electronic health cards generally refer to resident health cards. Residents' health card is a basic carrier of personal information based on electronic health records, electronic medical records and three-level information platform, which is proposed by the national health informatization "352 1 Project". It is necessary to realize cross-system, cross-institution and cross-regional interconnection and information sharing of medical and health services, and it is a computer-readable CPU card.