You appear to presuppose that a name is necessary. In plenty of places it's perfectly fine to have a bell with just a number.

There is no such law that requires you to put your name on your doorbell in Germany. You are free to use Santa Clause or whatever. Perhaps the post man will at some point put dog shit in your letter box but otherwise there is nothing that would compell you to use your name.

Well, I live in a place where doorbells are attached to people. It's not "necessary" but, just for starters, you might not even get your mail if a signature for something is required.

Maybe it's different in some places but your delivery example seems like it would rarely cause problems as deliveries are usually addressed to addresses with a house name/house number and/or flat number, so they'd ring the corresponding bell for the house/flat number and then ask for the signature connected to the named recipient.

I've never heard of a delivery person say they wouldn't delivery an item because there was no name on the bell or that the bell name wasn't consistent with the recipient, and those guys are experts at excuses for why they can't/won't make a delivery!

> I've never heard of a delivery person say they wouldn't delivery an item because there was no name on the bell or that the bell name wasn't consistent with the recipient

That's exactly what our post will do to you. (And not just because they don't know what doorbell to use if there's no name on it.)