u/Laveta8

I wanted to try and make a writing system for toki pona that I could use on my devices as well and I have been interested in the Hangul writing system but I have no clue how it works when typing, let alone trying to make a new writing system, so I guess what I mean to ask, is it even possible to create/code a featural based writing system font like Hangul? if so, how would you do it?