Scramble pads. We have them where I work. Damn password can change a few times a week without warning. Gone for lunch? Well good luck getting back in until reception comes back to tell you the new code.

Those also prevent observers from being able to learn the code by watching someone type it in from a distance.

iirc this is a GrapheneOS feature too

I've seen this on payment terminals too. It's real annoying when you're used to do the same motion all the time. But safer obviously.

I wonder if this is a problem for dyslexia?