@Jan Wildeboer :krulorange: Depends. For example. if the Germam „Personalausweis“ would be used it would be possible to just verify the age (using AusweisApp2), without revealing any other data. This is one of the few things the German government did right - there's also the possibilty to use the Personalausweis in a pseudonymous way without being able to track you. Unfortunately there aren't very much sites that are willing/capable of using this.