Around the World in 80 Days with 2D codes by Ubimark books
via youtube.com
Paper books are a joy to hold and read, but in a hyperlinked world they can feel a little limited. Dr. Sorin A. Matei of Purdue University is making paper books writable and multi-layered with 2D barcodes (QR codes) through a system he's built called Ubimark. Imagine having a cloud of user-contributed commentary, maps, photos, audio and video annotating the paper books you hold in your hand.
