While there have been dramatic increases in the use of digital technologies for information storage, processing and delivery over the last twenty years, the affordances of paper have ensured its retention as a key information medium. In this book we review a wide variety of projects and technological developments for bridging the paper-digital divide. We present our information-centric approach for a tight integration of paper and digital information that is based on a general cross-media information platform. Different innovative augmented paper applications that have been developed based on our interactive paper platform and Anoto Digital Pen and Paper technology are introduced. For example, these applications include