With TVSync, content owners as well as advertisers and marketers can deploy unique and immersive second-screen experiences.

ENGADGET: TVSync API unveiled, helps devs build second-screen and smart TV apps

TVSync, a new initiative led by Vobile, supports connected second-screen experiences that cover virtually any aspect of eCommerce, infotainment or social media.

ENGADGET: TVSync API unveiled, helps devs build second-screen and smart TV apps

These are games that longtime players and newcomers alike will love to play, and everyone will be experiencing them in new ways, thanks to the integrated second-screen experiences enabled by the Wii U GamePad controller.

ENGADGET: Nintendo's Wii U Miiverse getting user communities, mobile access

In Wolk's vision of the near future, cable companies will focus on using tablets that act as remote controls and TV guide replacements with baked-in second screen experiences.

ENGADGET: The state of the second screen: Will TV companion apps proliferate or dwindle?

Flingo is keen on partnering with set-top box makers, TV manufacturers and TV networks to build out second screen experiences, and Navin sees show-specific apps holding their own, but third party solutions like GetGlue going the way of the dodo.

ENGADGET: The state of the second screen: Will TV companion apps proliferate or dwindle?

Such interactivity is already possible with so-called "second screen" providers, which are building social experiences on smartphones and tablets that allow users to interact with friends and content as they watch their favorite shows.

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