It's a good question. Do most wireless mice use infrared?

A related question is whether airlines mind laptops that have wireless network cards in them. My wireless card goes in my PCMCIA slot, so I normally just remove it prior to flying. But more and more laptops come equipped with 'internal' wireless network cards. I'm guessing most folks don't disable them in the hardware profile prior to flying, so we've already got some wireless signals flying about the cabin...