It’d be great to convert this into a mobile app that lets you take a photo and then loads it into a game analysis board. We would use this all the time at my local chess club. Sometimes we just want to know what the best move is and other times we want to save the game so we can continue it later. I would pay $10 or $1.99 a month for this. Food for thought!
This would be much much harder with a real board with 3D pieces.
Also, a 10% error rate wouldn't be a big deal as long as it was easy to correct the position within a few seconds.