season's Cotton Bowl against KSU, Ed Kehl heard the QB call out a play at the LOS and signaled to Omar Morgan that the play was coming his way. Morgan was then able to step in front of the receiver for the interception to seal the win. Kehl knew the play call because they had run it earlier in the game.

Why would teams use those big cards or hand signals to relay plays if it were illegal to steal them? I think the same holds true in baseball. If a runner on second base catches on to pitch signals from the catcher, the runner is free to let the batter know if he can find a way to do it without tipping off the other team. When I played baseball in high school we had a signal we could give as a second base runner to the batter if we thought we knew the next pitch.

Now, if you bugged the other team's headsets, as happened to BYU in the 1985 UTEP loss, that is illegal. If you used binoculars or enhanced listening devices to catch sideline conversations, I am sure that is also a no-no. You'll even see coaches covering their mouths with the play calling sheet so that the other team cannot read their lips when they call in plays.