Just to clear something up- informed consent means that those who are having their photos put online understand the implications of this ie having a digital footprint, biometrics, the fact that it is there forever / their image is property of Meta etc . Also, don’t get me started on some of the hideous dark places images of children can end up.
Informed consent doesn’t mean handing out forms.
When I am about to take a picture of a friend , or anyone for that matter, I ask if it is ok. This is also considered common decency. If I am going to post it online, I also ask for their consent. More often than not nowadays, people ask to not post it online.
Children do not understand what the implications of their images being online are, and therefore cannot possibly give informed consent.
as a teacher of young adults 18-20 , I hear so often how they feel that everything they have ever done- every achievement , every milestone (which can often be embarrassing) are documented on the internet and there’s no way they can take it down. Some of them worry that they’ll never get a job. Some of them are concerned that future partners may be put off. Just because we are in charge of kids and look after them when we are small, doesn’t mean we own them.