MoviePass , a new $50-per-month service for film fans, will let subscribers watch unlimited movies in theaters using their smartphones as tickets. Using an HTML5 application (native smartphone apps coming soon), MoviePass will let users search for a film, find a local show time, check in to the theater and go straight to the ticket-taker. The all-you-can-watch service, announced Monday with a private beta starting in the San Francisco Bay Area just in time for the Fourth of July blockbuster weekend, is looking to shake up the theater business in much the same way Netflix has changed the DVD-rental game. “Even with online ticketing, this side of the business is still a 75-year-old business and there’s not a lot of innovation,” MoviePass co-founder Stacy Spikes said in an interview with Wired.com. “Getting your tickets, how you do that, how you interact with the theater, how you interact with the studio, none of that has really changed. We’re giving the viewer a lot more power and