They could get this done quick, maybe by next season for the NFL, and the NHL/MLB and other sports could follow suit! "Our goal is that by midseason we will have some teams geared up," Guskiewicz said at Wednesday's event at the headquarters of Under Armour. Various types of sensors fit into mouth guards and helmet linings or can be worn on patches behind the neck. They transmit data on head impacts to laptops or tablets. "We're getting close, and I think that we have some teams identified," said Guskiewicz, co-chair of the NFL's Subcommittee of Safety Equipment and Playing Rules.