My thought was that it would be an excellent, low knowledge way of figuring that out. For example, if it said type "qwerty" and it came through as "azerty", tha

My thought was that it would be an excellent, low knowledge way of figuring that out. For example, if it said type "qwerty" and it came through as "azerty", that would get you 95% of the way to having a fully functional keyboard. Mapping out the requisite keys needed to fully identify the keys could probably be done with a fairly short number of key presses for 99+% of likely keyboards. For this case, I am assuming that the keyboard and os language are fairly compatible, at least translatable.