[EricH]

Originally Posted by Tom Line

I think you would be well advised to understand how easy it is to see infrared being broadcast. In fact, you can by inexpensive real-time cameras that will show you pictures in the infrared.

You might get a little surprise if you try to interfere with the competitions.

But that's just a guess.

Who's got a cell phone camera? On at least some of them, you can see IR transmissions. (I tried it earlier at home--also tested a fire alarm by mistake.)