1. Why didn't you realize this technology at the beginning?
At first, the COVID-19 epidemic caught us off guard, and there were many things that we really didn't expect. Things like green code are driven out by programmers overnight, and they are certainly not so thoughtful. However, when various problems appeared on the water and the COVID-19 epidemic was well controlled, more problems were considered and more problems were seen. In view of the problems of the elderly, they have formulated corresponding measures. It's also good, because no one is sure to react so quickly. These things are solved step by step. As long as it can be solved, it is not a problem.
2. When will this technology be popularized nationwide?
It will definitely take some time, because you can't eat fat in one bite, so giving them some time will definitely give you a satisfactory answer, so that it will be much more convenient for the elderly to travel next time, and they will not be unable to enter some places because there is no green code. If they have this problem, they will definitely not delay their trip because of this problem. Therefore, this technology is worth popularizing nationwide, and it has lightened a lot of burdens for the elderly.
3. What does the green code bring us?
It has brought us convenience and a more orderly order. For example, at the beginning, everyone was in a state of panic. I don't know if I was updated by people in COVID-19. There are many unknowns, but when this technology is popularized, everyone seems to have a reassurance, because through this green code, a lot of information can be known, which is a reassurance for everyone.