Recording and Understanding Mobile People and Mobile Technology

We present an approach to recording and understanding the activity of people moving and interacting with each other via technologies such as mobile phones and handheld computers. Our focus is the combination of observational techniques, usually based on video recordings, and system–based techniques that log or instrument the technologies in use. At a higher level, we explore tools to allow sociologists and computer scientists to interact around a coherent visualisation that coupled resources usually associated with just one of these two communities of research practice. The Replayer system supports the creation of system logs, and the visualisation of the results in a display that is synchronised with video and audio recordings. We present a case study showing how Replayer was used in the evaluation of a mobile multi-user system called Treasure, highlighting evaluation results that would not easily have been discovered by more traditional means.

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