Coming this fall. Chain gang will still be on the sidelines as a back up, I assume. 

This is great and all, but it still doesn't fix the real issue. The issue has NEVER been with the chains, it's always been with where the officials spot the ball. Nothing is changing in that regard, officials will still eyeball and hand spot the ball.

I've wondered why they didn't do this years ago.   Nothing worse than having the play slowed down because the dinosaurs manning the chains can't move fast enough to reset the marks.

Just watched a virtual measurement during Rams/Chargers game. This is one of the DUMBEST things the NFL has ever done.

I don't recall there ever being any controversy with the chains. The controversy has ALWAYS been with the spotting of the ball by the Officials. The ball was spotted and an Official actually kneeled down with his had on the ball, while the Virtual system did its thing.

Millions of dollars spent and wasted by the NFL on a non-issue.

If they want to accomplish something, figure out how to Spot the Ball accurately using technology.