On the road [From the Editor in Chief]

This issue focuses on the notion of large-scale opportunistic sensing. This topic is particularly relevant today, with intense interest across the pervasive computing community as well as a wide range of other disciplines that are beginning to appreciate the power of pervasive sensing as a tool to inform their own research agendas. Also featured are three regular articles and five departments covering recent conferences, initiatives in pervasive education and wearable computing, developments on the Android platform, and innovations in the pervasive computing product space.