Dr Olivier Chapuis (PhD, Paris Diderot 1994) is Research Associate (CR1) at CNRS. He received his Ph.D. in Mathematics and spent 8 years at Institut Camille Jordan (CNRS & Lyon-I University) where he worked on model theory, group and field theory and algebraic complexity and published papers in journals such as Journal of Algebra, Annals of Pure and Applied Logic and Journal of Symbolic Logic. In 2003, he switched to Human-Computer Interaction and joined the In Situ team (LRI -- University Paris-Sud & CNRS, INRIA). His current research mainly concerns window systems, engineering of interactive systems, multiscale Interaction, graphical interaction techniques and the evaluation of interactive systems. He has published and served as reviewer in conferences such as ACM CHI and ACM UIST.