Location-triggered mobile access to a digital library of audio books using Tipple.

This paper explores the role of audio as a means to access books while being at locations referred to within the books, through a mobile app, called Tipple. The books are sourced from a digital library-either self-contained on the mobile phone, or else over the network-and can either be accompanied by pre-recorded audio or synthesized using text-to-speech. The paper details the functional requirements, design and implementation of Tipple. The developed concept was explored and evaluated through three field studies. [ABSTRACT FROM AUTHOR]