My research interests lie in Human-Computer Interaction (HCI) and ubiquitous computing with an emphasis on hardware and sensing technologies. More specifically, I am interested in developing interactive systems for mobile devices, and developing new hardware and sensing technologies to support user interactions in mobile/ubiquitous computing environments. I am also interested in understanding user practices and uncovering problems in difficult interaction contexts through quantitative and qualitative approaches. Besides HCI and ubiquitous computing, I am interested in machine learning, computational linguistics, statistics, psychology, and physiology.