Major System
I use a non-standard major system that was adjusted to make Korean map on a little bit better.
- 0 - ch sh j ㅈ ㅊ
- 1 - r
- 2 - n ㄴ
- 3 - t d ㅌㄷ
- 4 - m ㅁ
- 5 - l ㄹ
- 6 - s ㅅ
- 7 - k g ㅋ ㄱ
- 8 - f v ph
- 9 - b p ㅂ ㅍ
I initially encountered Derren Brown's version in his book Tricks of the Mind, though the method precedes him.