Usability Issues and Methods for Mobile Multimodal Systems
Anthony Jameson · 2002
Mobile multimodal systems raise some novel usability challenges. Some of these are due to the combination of two characteristics of mobile systems and multimodal systems, respectively: the competition between the system and the environment for the user's attention; and the availability of multiple modali- ties for user input and system output. This paper rst presents a theoretical argu- ment that the set of problems raised by the combination of these two characteris- tics is more than just the union of the two sets raised by each characteristic itself. It then discusses one relatively new methodomobile eye trackingothat can help with the empirical study of these problems. Finally, it considers the question of how automatic system adaptation to a user's current resource limitations might ultimately enhance the usability of mobile multimodal systems.