Watching television while also using a smartphone or tablet is one of the most popular leisure activities of the mobile era.

The mobile industry is working hard to create mobile apps and sites that relate to what’s on TV, in order to capitalize on this behavior.

This approach is often referred to as the “second screen,” the idea being that the tablet or smartphone becomes a TV companion device, allowing for added levels of interactivity— whether on social networks or dedicated second screen apps and sites that complement on-air content.

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Read more: http://www.businessinsider.com/second-screen-industry-set-to-explode-2013-6#ixzz2VSztxRg2