What is the actual use of health codes for the elderly?

In fact, the number of health codes for the elderly is not much, because there are not many practical multifunctional mobile phones for the elderly, most of them have not received much education, and some of them don't even know a word, so it will be particularly inconvenient to use smart phones. Many elderly people can use mobile phones, and there will be no health code for the elderly on their mobile phones. Therefore, the health code for the elderly is not widely used in the elderly. Because in this era of rapid network development, some widely used applications are not particularly convenient for the elderly, especially on mobile phones, and many elderly people can't use smart phones well. Because they not only don't know too many words, but also their eyes are not particularly good, it is inconvenient to use smart phones. The elderly health code can only be used by smart phones, so it is not very fast for the elderly to operate and use the elderly health code, because many elderly people are not particularly well-informed in using the network on their mobile phones, so I think we should design a more suitable method for the elderly. Although the network is becoming more and more developed, we should also take care of the feelings of the elderly and come up with some health codes suitable for the elderly so that they can use them more widely. If the elderly can't operate the health code of the elderly normally, they can only use it with their families, which is not particularly convenient for them. Even if some elderly people can use the health code, it is more troublesome for them, because the memory of the elderly is getting worse and worse, and it is really difficult for the elderly to remember things, so it will be very slow to use the health code for the elderly. Although the health code is very convenient for young people, it is not particularly convenient for the elderly, and it will be rarely used in practice. Although mobile phones are very convenient for young people, they will be particularly troublesome for the elderly.