Microsoft Surface is distinguished among commercial multi-touch systems by its ability to interact with tagged objects. In this work, we examine a new class of tagged objects where the tag is dynamic—it changes in response to some sensed variable. As an example, a drinking glass is described which can sense when a refill should be offered. The glass is completely passive, containing no electronic components or moving parts, and works with an unmodified Microsoft Surface. Keywords SurfaceWare, Surface, dynamic tags
Paul H. Dietz, Benjamin D. Eidelson