[frau kaleun]

Originally Posted by Skybird

Small range jamming device run by the theatre.

Maybe a physical solution, like a Faraday cage?

Or having a sign at the entrance prohibiting cellphones inside, and staff of the house escorting any ignorant antisocials out.

Or interrupting the movie, switching on the lights and displaying row and seat of the antisocial in large letters on the screen, and then wait until the dust has settled.

Even better: http://theoatmeal.com/comics/movie_theater_layout