This application made me think as a user I would like to be able to point my mobile at library book shelves and, as I run it along the shelf, see on screen the catalog record of each book, without having to bend my neck to read the book spines and then having to pull and open each likely book to see the details inside.

I don't know of any mobile phones that can read RFID tags, but perhaps an augmented reality application similar to that one could do the trick, provided spine labels are in good condition and so on.

Any thoughts?