They could add an official or 2 who sit in a sky box and watch TV with a direct communication link to the head official. When they see something on TV - like you and I do - they just tell the head ref that there should be a penalty. Or that the flag should be picked up. Whatever the case may be.
Maybe the head ref goes to his replay booth to confirm the info, but I think this would work. I mean, if you and I can get every call right sitting on our sofa you'd think the NFL could do the same!!
AlbaNY_Ram
