Nice explanation Sanakreon. Rep added.
I will keep this thread in mind for the next time I am asked this question. The pictures are helpful.
An Asian keyboard isn't necessary Spacey but I am sure it is faster. If you run a version of windows you can install the appropriate Microsoft Global Input Method Editor
and enter Asian (or other scripts) from your Latin keyboard. Using an IME is pretty much the same as what Sanakreon described.