Experiments in rights control: Expression and Enforcement

The Internet has transformed our long-term perception on working, entertainment, and living rapidly. We can now work comfortably in our own home, shop for our groceries without stepping outside the house, and enjoy high-quality entertaining digital content, such as music or lm. This digital content can easily be produced and copied with available digital technologies; and the content can be distributed and shared through the Internet almost effortlessly. This phenomenon has created a wide variety of usage scenarios, and has also induced huge loss to the lm and music industry through piracy. To solve this problem, we have to protect the digital content by controlling how the users are using the content. Thus, rights control has emerged as a potential solution.