I think this challenge remains unanswered to this day in one important way: just about all current handwriting recognition tools assume you're capturing that handwriting digitally (touchscreen, smart pen, smart paper, etc.). That's already impacting the "operational mechanics" mentioned in the article.
Vision/light is what the physical and digital worlds have in common. I think this is the only (efficient) way forward.
Vision/light is what the physical and digital worlds have in common. I think this is the only (efficient) way forward.