Making a handwriting recognition system

I’m trying to make a mobile application where the user is giver a letter or set of letters and writes in a box below what the Japanese counterpart is. I haven’t really seen anything about handwriting recognition, let alone in Japanese, so I want to know if its possible. Also, how would I do it? Any help would be greatly appreciated.

Edit: So I looked at the things that were recommended, and I wasn’t really able to get either one to work, so what kind of things would go into making one?

MyScripts supports Japanese, not sure if anyone has made a plugin for it though so you may need to write your own.

If you’re just trying to recognise a single character from a known fairly small alphabet then P$ recogniser might work well - there’s source code at $P Recognizer