 He is currently professor of computer science at Paris-Sud 11 University since 1992 (in the in Situ group) and was director of , the laboratory for computer science, from 2002 to 2009.He has worked in Human-Computer Interaction for over 20 years and was elected to the ACM SIGCHI Academy in 2006.His research interests include fundamental aspects of interaction, engineering of interactive systems, computer-supported cooperative work and novel interaction techniques.