Large-Scale Opportunistic Sensing

Editor's Note:In this issue, we feature a range of applications with potential to impact our everyday lives. The first two reports are related to this issue's theme, proposing sensor-based systems for energy management and eldercare. Also featured are three automotive computing proposals, which offer solutions for activity promotion, path prediction, and vehicle passing. Other proposals explore eyes-free solutions for the mobile Web, the use of humans as sensors for increased reliability, and a smartphone-based sensor that assists in early stroke diagnosis.