Nowadays, health codes are used in domestic travel, and such codes can also record your safety factor. For such a regulation, it is facing the management of the whole country, so this is a management method. Then this mode of travel is also based on managing the safety of the people of the whole country, because the current epidemic situation has a great impact, so in the face of such a serious problem, the country should have one person and one yard, and the green health code is a relatively safe health code, so if other colors appear, it represents a very dangerous situation, which can isolate him and ensure the spread of the epidemic.
This is also a security code. For people, a code can represent that you are safe, so this code can ensure your safety when you travel. Without this code, you will be isolated from such a series of hazards. So this way is a basic and responsible way for a person. This practice is actually to prevent the whole country from spreading on such a large scale again, and then manage the whole people to ensure the safety of travel.