This month's Works in Progress department features six projects related to activity-based computing—a hovering information service for mobile devices, a method for analyzing spatio-temporal data to learn activity patterns, a conflict-resolution method for context-aware applications, pervasive middleware for a mobile environment, a novel sensor network for controlling power consumption, and a system to help end users visually design context-aware activity-based ubiquitous applications. This is part of a special issue on activity-based computing.