The days of measuring for first downs manually isn't over yet, but the NFL is moving closer to that point. The league has been testing optical tracking as a way to replace the chain gang as the ...

The U.S. Army is starting market research for possible sources of an optical tracking solution for its test rannges to use in GNSS-denied environments.

The NFL’s “Chain Gang” could be on the way out in 2024. The league will test optical tracking for line-to-gain rulings this preseason, according to CBSSports.com’s Jonathan Jones. The reports adds if ...

The NFL’s method for measuring first downs — two bright orange sticks and a chain — could soon be getting a technological upgrade. The league plans to test optical tracking for line-to-gain rulings in ...

The National Football League plans to experiment with optical tracking technology this preseason, a move that could eventually make the league's sideline chain gang obsolete, according to sources in ...

NFL referee Walt Anderson spots the ball after measuring with the chains during a game between the San Francisco 49ers and Arizona Cardinals. / Mark J. Rebilas-USA TODAY Sports "Bringing out the ...

The NFL will test an optical tracking system for line-to-gain rulings this preseason, Jonathan Jones of CBS Sports reports. If all goes well, the league will implement the technology for the regular ...