He has been a pioneer in the exploration of human-centered perspectives on computer networking, particularly in the home.<!-more-> He has also been active in developing more usable approaches to information security systems. Lately, his research has expanded into a number of explorations of the social impacts of computing technology and understanding how technology can support the work of non-profits and NGOs. While he is a technologist at heart, he enjoys working with designers as well as ethnographers and other social scientists.