A group of German researchers has come up with a novel form of DRM for e-books.
Dubbed SiDiM, the DRM changes the text and punctuation of an e-book slightly in a way which is unique to each book sold.
While this will not stop the book being shared, it will serve as a digital watermark that can be used to track books that have had any other DRM layers stripped out of them before being shared online.
One researcher, Martin Steinebach, reasoned that consumers will be too paranoid that they'll be caught if they share an e-book illicitly.
If it does get widespread use it will end the days of trying to restrict movement of e-books between stores and devices, and ties a book to a single account.
Getting rid of the DRM is easy and actually makes the book a lot less heavy in terms of code.
According to Wired, the changes are minor and most people would not find them.
The SiDiM consortium currently has two German bookselling partners. 4Readers and MVB, that it reports to, according to Herr Dr. Martin Steinebach.