Phone-controlled gaming on a jumbotron

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Megaphone has devised a novel way to make mega-screen advertisements draw crowds. Anyone within view of a large video display managed by Megaphone can join in a simple video game by calling in with their cell phones, with their phones serving as makeshift game controllers. As a video on Megaphone’s website demonstrates, those linked into the game can fire weapons at space-alien attackers while seeing their own avatar along with those of other players.