First, you can scan the code directly with WeChat. As a daily communication tool, most people have WeChat.
Second, if the elderly don't have a smart phone or internet, they can ask others to help them fill in the information and print screenshots of the health code. Take it with you when you go out. There is usually a green passage for the elderly. Just register the information manually.
Third, there are health codes on other software, such as the learning ability software launched by the Propaganda Department. This is an official software that can display health codes, but requires registration information. Registration method is as follows. Find the location of epidemic prevention and health code (as shown in the figure) and fill in your own information.
Although Alipay has brought a lot of convenience to everyone's life, not everyone has Alipay. There is no Alipay, there is WeChat, and there are other software that can display your health code. Choose a convenient way to prove that you are a green code.