The Next Frontier: Interoperability
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As described before, there are many DRM systems, and content protection systems. Most of them are not interoperable. Unfortunately, the lack of interoperability affects all stakeholders, not only consumers. Thus, interoperability is a highly expected characteristic for the future. We explore five approaches of interoperability: vertical, horizontal, plug-in, translation, and Interoperable Rights Locker. Then, we describe existing solutions such as Coral, UltraViolet, and Keychest. The final section explores how to transcode bulk encryptions and translation of usage rights.