Real-time updating of background data of health code is a dynamic monitoring process. The color of health code will change according to personal health information and environmental exposure history. Health code is a personal health information and activity information judgment system used for epidemic prevention and control in COVID-19, which is declared online by individuals themselves, and the QR code can be generated after background review.
Health codes can be used in other provinces. According to the related information of 20021Spring Festival travel rush national video conference, during 20021Spring Festival travel rush, unified policies, unified standards, national mutual recognition, and one-code communication were implemented throughout the country. Citizens can apply for a national health code.