Filed under: Misc. GadgetsYesterday YouTube unveiled YouTube Video Identification, a system designed to prevent copyrighted videos from making their way onto the site without the consent of the owner. Rather cunningly, YouTube requires that content owners send in a master copy of all their copyrighted content -- y'know, so they can cross reference it against uploads (nothing to do with Google's aim of indexing everything, ever no.) Any data that matches the reference data can be deleted automatically, but only if the content owner says so. Accordi