Is there actually some tech in development to automate that? I'd be fascinated if that were the case...I just feel like, given the speed and size of the bat head (and the difficulty of getting a perfect overhead angle), even an automated call is going to have a margin of error that essentially replicates where we are now. Meaning, instead of the umpire guessing, it'll just be the technology.
I suppose you could embed trackers in the bat (but which part?) and cameras at the very front of the plate (but how big are the cameras?), but that seems like it would be tough.
And now the crappy balk call costs the Brewers a run.