Generally, children don't go out alone, most of them travel with their parents, so even if children don't have health codes in some places, as long as adults do, they can take the train smoothly. But if the train station is strictly inspected, there are ways to solve it.
Although children don't have smart phones and can't apply for health codes themselves, parents can help their children apply. For example, parents can help their children apply for a health code on Alipay. First open Alipay app, and then enter the health code in the search box. At this time, the health codes of various regions will pop up. Users can choose their own area, click in, fill in the relevant information of their children, and they can receive success. In this way, under the operation of parents, children can still get on the train.
Of course, in order to make it easier for children to use the health code in the future, parents can also print out the health code they have applied for, and then buy a badge bag for their children to carry with them to make it more convenient for them to use.