1. 1 University of Washington Yang Li DUB Group activity-based ubiquitous computing – structuring ubicomp technologies and representing interaction contexts – exploring tool support for activity-based ubicomp sketch-based user interfaces – pen-based interaction technique design – sketch parsing & demonstration

2. 2 Current Focus Tool Support for Exploring Activity-Based Ubicomp analyze & design – based on collected field data rapidly model & prototype – human activities – interactive behaviors easily test a design – Wizard of Oz or sensors facilitate deployment process – realistic & longitudinal studies ActivityStudio

3. 3 Relation to Reality-Based Framework design interactions based on what people naturally do provide tool support for exploring, prototyping and testing new ideas use sketch-based user interfaces as another case of reality- based interactions two issues –leverage knowledge at different levels? operational level, e.g., automated skills of switching on a light action or task level, e.g., knowledge of making coffee activity level, e.g., awareness of social structures –inform how interaction computing should be structured?