Protecting DAISY content

DAISY has published a Specification for DAISY Protected Digital Talking Book. This paper discusses why such a specification is useful, not only for rightsholders but also for readers with print disabilities. An implementation of PDTB2 is proposed, called dtbprotect. It makes possible to simply produce an encrypted book from a book in DAISY format. It is currently experimented on the Helene Digital Library for the blind. It will be made available open source as to facilitate its implementation by other digital libraries