In its most primitive form, SmartGlass is a Wi-Fi remote app for video. When launched, the app goes into "listening" mode, and seamlessly syncs up with any SmartGlass-enabled content, providing the usual array of controls (we were shown School of Rock from Microsoft's own first-party movie service as well as a clip of Game of Thrones from the HBO Go app). That's just where the story begins, however.

For more, check out this Washington Post story.