Just my 2 cents but over here in the "Kingdom", I get a lot of La Liga (Barca fan of course) and Premire League games as my son follows Chealsea after seeing Tedd Lasso... (thats Soccer for you US folks).
They use goal line technology with sensors in the ball the moment it hits the goal line, a signal is sent to the umpire/refs via wrist band (buzzing) that signals the ball broke the plain. Takes the guess work out bad angles, etc.
Just sayin it seems to work well here and may be worth a look by the NFL to fix fucked up ref calls.
