 His research topics have included the role of informal awareness in supporting coordination in collaborative systems, the relationship between 'place' and 'space' in information systems, and
methodological questions about the use of ethnographic techniques in information systems design.At UC Irvine, he is a teaching professor of Informatics in the Donald Bren School of Information and Computer Sciences department, where he is a member of the Laboratory for Ubiquitous Computing and Interaction (LUCI), and in the interdisciplinary graduate program in Arts Computation Engineering.In addition to his appointment in Informatics, he has courtesy appointments in Computer Science and Anthropology.