Is the health code still useful now? Health code is very useful! Your daily activities can be recorded. It is a kind of protection for yourself and others.
Why do you say that? When you go to a supermarket, a bus or a crowded place, you don't know who is infected or asymptomatic in COVID-19. Maybe you too. So we can find these contacts. If you don't scan the code, you may be infected, or you may unconsciously infect your family and contacts. You are a troublemaker. This question is the same for everyone.
Don't think scanning code is unnecessary, it should be very important. Once someone is infected, you have been exposed to it, but you don't know it. Scan the code and you will be found. Protective personnel will test your nucleic acid to see if you are infected. Therefore, scanning code is very important!