“Look, if there was an earpiece, what radio frequencies were used?”
Not if nobody was looking for it
As for frequency, encryption is easy to obtain, so it would be scrambled
One thing’s for sure, he’s got access to the best- could have borrowed from his SS guys he stood up for when they got caught whoring around, eh
Everyone would be looking for it.
Face it, he just sucked on his own.
As somebody else posted, the earpiece he’d be wearing, you couldn’t possibly detect. This was just reflection in his large ears (but you still see that scar on the other side of his head.
That said, I do think there was something odd about the way he kept looking to the side as if pating attention to something coming from that side. He wasn’t reading ( my first thought) because they didn’t move back and forth, but he definitely seemed to be paying attention to something to one side. And on those few occasions that he looked at Romney, he would begin to blink rapidly. Wierd.. But that’s Obama in a nutshell.
If I were asked to rig up a system for such an occasion I would avoid using radio as it’s too easy to detect. It’s what everyone would be looking for.
What I would do is use infra-red since the circuitry is so very simple. IR headphones are a very mature technology. Or I might use ultra-sonic and shift the frequency range back down to the normal range inside the earpiece. There are headphones that do this so you can hear the sonar echo-location of bats...this is also a pretty simple technology.
The problem with IR or ultra-sonic is you could wind up with a system that was dependent upon the positioning of the head. This would be especially true if there were only a single device pumping out the signal from a single direction.
In 2012 we need a frequency scanner and a jammer at the debates in the audience.
That would be funny to watch.
Or we could even get an impersonator to give a different, and very funny, narrative to the dim candidate.