As annoying as the constant loud-mouth cell phone assholes are, I agree that jammers should be prohibited.
You can't as in individual decide to shut down public air space because you don't like it.
The owners of a restaurant need to have the balls to deal with obnoxious cell phone yackers one on one. This is not a deal where we need the government involved. People can handle this one them selves.
As I said, the government is already involved. Is the space inside my private store “public space”? This is where all those libertarian notions fail. The government is involved in hundreds if not thousands of places inside and outside your private vehicle, for one example. How about that mattress tag, huh? I should be free to jam cell phones inside my restaurant, just as I am free, or required by the government for that matter, to ban smoking.