I can touch-type on a QWERTY keyboard. For the Latin alphabet, I want a QWERTY layout even when I'm typing French or German; even when the keyboard is physicall

I can touch-type on a QWERTY keyboard. For the Latin alphabet, I want a QWERTY layout even when I'm typing French or German; even when the keyboard is physically labelled AZERTY or QWERTZ. I type Korean on a 2-Set Hangul layout, but have never used a keyboard that was labelled with that layout. (Aside: typing in this layout does not generate a Unicode codepoint per keypress, but combines two or three letters into a single codepoint). If the keyboard was responsible for deciding all this, I'd need three keyboards and I'd need to carry them around with me whenever I wanted to use somebody else's computer.