I am an associate professor and the NSERC/Facebook Industrial Research Chair of Human-Machine Interaction at the University of Toronto. My general area of research is the leveraging of computing technology to enable users to live better lives. This work includes the development of user interface software, interaction methods, sensor hardware, new device form factors, development platforms, and operating system architectures. Talks about my work in may be found online: haptics & high performance UX, post-WIMP user interfaces, and the symphony of devices.