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August 13, 2013 by · Leave a Comment 

Hollywood has a new weapon in its war against piracy — a virtually imperceptible “audio watermark” that is added to the soundtrack of a movie. As reported by today’s (Tuesday) Wall Street Journal, the watermark, developed by San Diego-based Verance Corp., acts as a signal to Blu-ray Disc players that the movie was camcorded in a theater, shuts it down after 20 minutes — then offers viewers the opportunity to continue watching the film by ordering it from Amazon or Netflix, if it’s already released on video, or by pre-ordering it from other retailers if it’s only in theaters. The Journal also described a system developed by a company called PirateEye that uses cameras installed above theater screens to detect recording devices and alert theater security. The system has reportedly been responsible for the apprehension of about a dozen pirates.