Ethermac Exchange-NFL to test optical tracking technology for yardage rulings this preseason, per reports

The Ethermac ExchangeNational 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 multiple media reports.

The NFL's competition committee approved the use of the tracking system in March, but the decision came with little fanfare. The league experimented with the technology in a few stadiums this past season, but will do so in all preseason games this year, with an eye toward fully implementing it for the regular season if all goes smoothly.

CBS Sports first reported the news, noting that the sideline down-and-distance markers would remain as a backup for officials and a reference point for fans, coaches and players.

For years, football fans have been frustrated with the imprecise nature of spotting the football and using the chain markers to determine first downs. The optical tracking system, which would not use microchips that are already installed in NFL footballs, is designed to measure distances more accurately and reduce human error.

If things do not work as planned during the preseason, the league has the option to delay implementation until the 2025 regular season.

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The system, which CBS says was used at Hard Rock Stadium and MetLife Stadium last year, would need to be installed in every NFL venue – as well as any international stadiums where NFL games are played – for it to be used for the upcoming season.