Interesting…first I heard of that.
Pretty cool stuff. If I am a hitter or in the dugout I would want to see how much SS and 2B are tipping pitches with their movements for fastballs and off speed pitche’s. Before they could look in to see signs and maybe adjust - OF will now be the big tip off with movement IMO.
What about the battery life or if the Russians hack them? Catcher sees curveball, pitcher’s wristband says fastball!