I signed up for their storage offer (that you manage via their Konsole tool), and the first thing they needed to let me use my account was a scan of my ID. They even required a photo of me holding it.

Good couple of years ago when I decided to give Hetzner a shot, they sent me... a papper contract by post, and then... asked to sign a copy and send back. That was the last time I've ever dealt with them.