This is fascinating stuff! Also, as an on-and-off longtime user of the Neo Smartpen I had never looked into whether these pens were hackable! I wish I had more samples of my father's unique and expressive handwriting with the Neo Smartpen before he succumbed to micrographia.
I've had one or two moments where it doesn't complete some strokes.
"이런걸할수 있을까" were missing it's ㅏ or ㅓ ticks and turned into "이런길할수 있을끼" or "안녕하세요" was missing the last horizontal stroke on the ㅛ