Comment: Guarenteed to work, use Dvorak (Score 1) 695
Switch your keyboard layout from QWERTY to Devorak. Learn Devorak over a week or so and then you're all set.
I bet when you tell them, "Yeah, go ahead, but my keyboard is wonky, it has a different layout", they'll try to type, get frusterated fast, won't want to tell you their passwords then say "thanks but no thanks".
It's worked for me over the last decade in dozens of situations and environments. People just won't touch your computer if they can't type on it.