Gizmodo reports that Ubimark has published a special edition of Around the World in 80 Days that includes QR codes that work with a free iPhone app to serve as links to a website for on-line footnotes and discussion. Just point the iPhone at the code, and the link opens on your phone.
Print books with e-footnotes is an interesting idea with a lot of potential. We all know that printed books aren’t going away—but something like this could serve to provide them with the easy-linking advantage of e-books.
Of course, it’s a little funny that the first book to have these is 137 years old—but then, that also highlights the value of being able to reuse public domain material.