I didn't think we were there with the chip technology in the ball yet but looks like this is most likely the answer.
AI Answer:
Yes, NFL footballs are chipped; a small, coin-sized microchip has been inserted into them since 2017 as part of the NextGen Stats system. While this chip collects data on the ball's movement and other player metrics, it has a margin of error and is not currently used to make precise officiating calls like first downs, though the NFL continues to test and develop the technology for future use.