UNfortunately, the gummint is already in the mix forbidding the deployment of cell phone jammers.
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.