It seems like you have an impossible standard for determining proof of identity. What type of verification do you envision that isn't subject to flaws? Presenting an ID in person also only proves that someone had access to or a copy of an ID. Of course, there are some physical appearance constraints, but it's not hard for a determined identity thief to get around those.
Personally, I'm glad I live in a country that doesn't criminalize identity verification that utilizes 21st century technology (though I'd gladly accept some other German public policies).
Personally, I'm glad I live in a country that doesn't criminalize identity verification that utilizes 21st century technology (though I'd gladly accept some other German public policies).