This looks amazing and really useful for real-time sign language translation!
This is a really good write up on the issue of signing gloves and tech: https://www.theatlantic.com/technology/archive/2017/11/why-s...
Maybe this can be a pitch to MLB teams to learn the opposing team's catcher's pitch signs? If it wasn't only hands, not sure if this could offer anything to analyzing third base coach signs as well.