Theft, distribution, and piracy of digital content (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is generally accomplished by copying it, if possible, or, if it is protected from being copied in any fashion, such piracy is based upon a number of reverse...http://www.google.com/patents/US7565697?utm_source=gb-gplus-sharePatent US7565697 - Systems and methods for preventing unauthorized use of digital content
Systems and methods for preventing unauthorized use of digital content