I'm really keen on things like this. I love (in theory at least) the concept of being able to work from literally anywhere, and the concept of some sort of smart display (glasses, lenses, etc) but having a physical keyboard to type out code is always a major barrier. Something like this starts to edge towards that vision which is cool. I wonder as well if there's a way to have some sort of bracelet (but probably some…
It works because in Korean, characters are made up of base characters. So you can essentially build a character out of two other characters, and then a syllable out of three of those characters. Then words out of a match of syllables.
Edit: It's 10 keys sorry. Example:
https://img1.daumcdn.net/thumb/R720x0.q80/?scode=mtistory2&f...