We've heard of some crazy audio watermark plans in the past, designed to prevent people from making copies of Hollywood blockbusters, and as the audio industry finally moves away from its protective restrictions, the film industry seems to just keep working on more. The latest, created by Professor Noboru Babaguchi and his colleagues at Osaka University in Japan, is a means to apply spread-spectrum audio waveforms to a film's multi-channel soundtrack, enabling pirate seekers to determine exactly (well, to within 44 centimeters) where the bootlegger was sitting when he or she committed his or her
