I’ve seen multiple requests for nsfw lemmy communities like reddit has. I live in Germany, and I think you are required to verify that the users that see porn content are above the age of 18. Does Lemmy has or plan to have a feature for that? Maybe this should be an issue on github?
The thing is, the “software” actually is open source, so you can tell how data is requested from your smart ID. The german government ID has an explicit function for age verification that does not provide any personal information.
https://github.com/Governikus/AusweisApp2
However it is probably hard and costly to get certified to use any of those functions as a service provider.