I'm in Czech Republic, but I guess the practice will be similar in Germany. It depends on the degree of verification you need. You can just post a scan or a ph

I'm in Czech Republic, but I guess the practice will be similar in Germany. It depends on the degree of verification you need. You can just post a scan or a photo of your ID, you can send a small wire transfer because banks have to verify the account owner, there is an OpenID provider that offers authentication tied to the real world identity, a courier can come to your home to verify the ID or any combination of the methods.