His primary research interests are in the areas of Ubiquitous Computing, Computer-Supported Cooperative Work, and Human-Computer Interaction. He is especially interested in the foundational relationships between social scientific analysis and technological design. His book, “Where the Action Is: The Foundations of Embodied Interaction” was published by MIT Press in 2001; it explores how phenomenological accounts of action can provide an alternative to traditional cognitive analysis for understanding the embodied experience of interactive and computational systems.