Microsoft has just applied for a patent on "Television Achievements"
"Television viewing tends to be a passive experience for a viewer, without many opportunities for the viewer to engage or have interactive experiences with the presented content," the application states. "To increase interactive viewing and encourage a user to watch one or more particular items of video content, awards and achievements may be tied to those items of video content."
Two examples given include doling out achievements for watching a single event like the Super Bowl, or for watching an entire series of a single show.
"Additionally, by tying the awards and achievements to particular items of video or advertising content, viewers may be encouraged to increase their viewership of the content, thus increasing advertising opportunities," according to the application.
Microsoft applies for patent on TV achievements | GamesIndustry International
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