I didn't go out, and the health code turned red.

The reasons why the health code turns red when you don't go out are:

1. The reason why you don't go out at home is because the calling card has an abnormal attribution. Health codes include green, yellow and red. If you haven't stayed in the middle and high risk areas for a long time recently, have no symptoms of suspected infection, and have not been in contact with infected people or suspected infected people, you can get the green health code. If you have recently been to a high-risk area, the health code may turn yellow or red.

2. People who do not live in high-risk areas, but whose registered permanent residence is in high-risk areas, especially those who are classified into control areas, can be assigned codes according to their registered permanent residence. Your mobile phone identity person is assigned a red code, but the mobile phone identity information is not your own, and his red code becomes your red code. This kind of misjudgment of the red code also happens from time to time.

The coverage of cell phone signals in adjacent areas overlaps, resulting in some people outside red team area, but their cell phone signals are connected to the signal base station in red team area. After big data analysis and judgment, it is determined that they have been to high-risk areas and turned the health code into a red code.

Health code access information:

Health code traffic information comes from data collected by the state. After prevention and control rules, data modeling and background comparison, three COVID-19 risk levels are judged and displayed in three colors: green, yellow and red.

After individual application, if it is a confirmed, suspected or asymptomatic case, the system will automatically issue a red team. The system compares the health code application of close contacts or individuals, reports it as unhealthy, and the system will automatically issue a yellow code. System comparison does not belong to the "five categories of personnel" (confirmed, suspected, asymptomatic, close contact, fever), and will automatically issue a green code.

Health code is strictly controlled from the aspects of network, application and data mode, and personal information is strictly encrypted and desensitized. The staff can only obtain the color and inspection information of the health code by scanning the code, and the design of the code scanning function fully considers the protection of personal privacy.