Many people don't understand the function and principle of health code, and think that their health code is green, which means they are healthy. In fact, this is just one of its basic functions. The function of health code is not to prove that you are healthy, otherwise you are not allowed to declare your physical condition and then report it. It is actually similar to the QR code of an electronic identity. Its function is not only to report personal health, but also to master your action track. For example, entering the supermarket, taking the bus, subway, plane and train will all be required to scan the health green code. Note that the device scans your health code, not manually! So the data that you enter a closed space at a certain time on a certain day of a month are collected in the system database. Because the code scanning work is carried out at the door, theoretically you can only know that you have entered this space. As for which floor of the mall you entered and which store you stayed in, the system doesn't know (because of the positioning accuracy) or when you left. Therefore, if a person is diagnosed as COVID-19, the trajectory of this person's health code is derived. For example, one day he went to a shopping mall ... congratulations, what a coincidence, you went to the same shopping mall on the same day as him, but you didn't know him, maybe you were passing by. Maybe you are watching a movie with popcorn on the fifth floor, and he is trying on shoes on the first floor. Of course, there are dozens or hundreds of people in the mall at the same time, which may be customers or salespeople. Therefore, through the background database of the system, the health codes of all people who have visited and stayed in the mall on that day will be upgraded for free, such as changing your color from green to dangerous red (this is the so-called big data analysis). As soon as you see that the color of your health code has changed, you should know that someone in a shopping mall has got COVID-19, which has brought you trouble ... You see that your red health code has become ownerless, and you begin to feel unlucky, because you can no longer go shopping or travel with your red health code at will, because it is equivalent to putting an eye-catching label on your forehead "Dangerous person with high contact with infectious disease patients". This is not the most terrible. The most terrible thing is that according to your health code personal information, your corresponding community workers will isolate you in full view, not at home, but 14 days! During the isolation period, all expenses will be borne by yourself! After the quarantine expires, if you can survive, your health code will change back to your favorite green again. Are you still alive and kicking? Don't! Waiting for your next move, the isolation room will smile and say "welcome again" Wait, wait ... that's what health codes do!
Therefore, before you decide to go somewhere, when you see that you want to scan the code, you'd better think about whether you want to enter, whether you want to go, and whether you trust everyone who enters that space enough. Can you be confident that they are as healthy as you? Wait, wait, wait.
Therefore, for the sake of a better life that is about to restart, it is recommended to go out as little as possible during the epidemic and cherish your "health password", especially for the working class and the family.