The document discusses Microsoft Surface, a multi-touch tabletop computer unveiled in 2007. Surface uses infrared cameras and projectors to turn an acrylic tabletop into an interactive display that recognizes touch, gestures, and physical objects. It allows multiple users to simultaneously interact with digital content in an intuitive way. Surface is being used in some hotels, restaurants, and businesses. The technology is envisioned as a future replacement for traditional computers and could transform how people interact with digital information in public and personal spaces.