I don't think there is really a problem with it. It's funny just how quickly people forget what can happen when you don't have tighter secruity on board planes. But I do doubt they'll ever push this one through. You can turn anything into a remote control device that is electronic. So if they push this one they'll have to ban anything with a circuit board and a battery. I mean do they actually think a terrorist is that stupid to carry on a RC remote to detonate a bomb? He might as wear a red flag on his head while he's at it.
This watch would do the job just fine and not be so obvious.
http://www.luxist.com/2005/08/09/bre...s-transmitter/