Talking Heads
Since the NFL allowed wireless communication in regular-season NFL games in 1994, quarterbacks can't get coaches out of their heads. Rather than coaches calling a timeout in order to give a play to a quarterback, many of today's teams are opting for radios inside their quarterback's helmet. Players from the "old school" might argue that this creates an unfair advantage, but proponents say that the radio helmets make for clear coach-to-QB communication, even in large, noisy games like the Superbowl.

According to a press interview held with the Tampa Bay Buccaneers, the quality of the sound is good, but crowd noise factors in. Its about like what youd hear over a loudspeaker, said Bucs QB Shaun King. It can be hard to hear when theres a lot of noise on the outside, but its pretty clear.

The helmets are set up with a small speaker in each ear hole. Quarterback coaches or offensive coordinators on the sidelines talk to the quarterback with a radio, giving him specific plays and options.

You can find out more about the evolution of this wireless communication and its recent uses by reading "A Wireless Superbowl."