What Is Stak Cast Bat Track in Lo?

There are a lot of options for tracking bat speed and sort of measuring how a hitter is interacting with that. In two parks, i actually think it's more than two parks, but this is what i have access to at the moment in houston and at dodger stadium. There are some alternative systems out there, rigt, non hawkeye, non stat cast, that have presented this information to teams that have signed up for it.