Couple good articles about NHL technology and data capture for fan and coaching/team applications:
Hockey is a sport of constant motion. The new feature allows fans to see how every part of a chance develops.
www.espn.com
NHL Coaching Insight App (2019):
NHL's app puts live stats in coaches' hands
"There are two stat types across the board that every coaching staff said that, without question, helped them make in-game moment decisions: Time on ice and faceoffs," Foster said. "With time on ice, you want to manage your top players to make sure they have gas in the tank at the end of the game, or if they're coming back from an injury."