This short paper was submitted and accepted at the idc 2007 in Aalborg. The paper - BibPhone – Adding Sound to the Children’s Library - describes the design of the bibPhone prototype within the children's interactive library project at the center for interactivespaces. It is written by Jesper Nielsen and I.

Abstract
In this paper, we describe the bibPhone, a prototype for recording audio annotations onto books and likewise functioning as the mediator for playing back annotations stored on books of the children’s library. Hereby the children’s library becomes an invisible landscape of sound tightly connected to the physical materials that is open for the users to explore and contribute to. The bibPhone exploits RFID and Bluetooth technology for establishing a wireless connection between the physical book and its metadata, which is stored in the central library database.

read the entire paper in pdf here