I am a principal researcher at Microsoft Research. My work is focused on applying sensing techniques to enable new styles of human-computer interaction. Today that means multi-touch and gesture-based interfaces, display technologies, depth cameras and so-called "natural" interfaces. In 2002 I helped found the Surface Computing group at Microsoft. I manage the Natural Interaction Research group at Microsoft Research. Before joining Microsoft, I obtained my BA at Cornell University, and MS and PhD at the MIT Media Laboratory. I grew up in a small town in Pennsylvania and now live in the Wallingford neighborhood of Seattle. I use this page primarily to list my academic publications. It was last edited on May 08, 2015. My business card has my contact info. You can view many videos of my work on my YouTube channel.