In 2014, the NFL began collecting in-game data through sensors implemented into the players' shoulder pads. These so-called “next gen stats”, which are produced through a partnership with Illinois-based tech company Zebra Technologies, are frequently used during broadcasts and track everything from a wide receiver's speed to a cornerback's movements on the field to a quarterback's pass distribution.
Through the first three years of the project, the league has only shared the data with teams individually; the New England Patriots, for example, received only the stats of their own players but none from any other team.