I once got a couple of Amazon Echo Dots as part of a promo. Little spherical devices with about a 3" round touchscreen. To set it up you had to enter your Amazon account info by tapping a keyboard on that tiny screen.

My password at the time was a random 80 character string, full of special characters. That would have been painful enough, but the password entry box would hide each character a second or so after typing, so it was nearly impossible to keep track of where I was, and whether I had skipped or double entered something.

I should have just binned them immediately at that point, but I spent probably an hour of typing passwords on those two fuckers--more out of stubbornness than anything else.