Hey, @dirkvl, I've got an idea for an additional perk or maybe a stretch goal:

It is clear that many phone cases won't be compatible with the TOHKBD, but there are some manufacturers that can produce custom cases for any size you specify. I have an especially good experience with FitBag - it's handmade and looks and fits great.

You could add a custom case for this TOHKBD, make a perk for, say 160EUR and make more money on it. It's easier than trying to learn german and typing in exact dimensions (which may change during the production anyways) when you just send a perfectly fitting bag/case without even having to handle it