Jill Cakert, of Ventnor, NJ, invented the signal fan to help her as a high school softball coach. She sent one to Philadelphia Eagles Coach Chip Kelly and he now uses it during games. Video by Michael Ein
Jill Cakert, of Ventnor, demonstrates the Signalfan, which she created initially for use during softball games.
Philadelphia assistant R.J. Harvey stands next to head coach Chip Kelly, right, and uses the Signalfan during the game vs. the Redskins.