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If you've ever wanted to see what those models have hiding behind their shirts, now you can with the Wonderbra Decoding App. As part of an interactive ad campaign, the app lets you decode ads by placing your phone over a billboard, a window display, a magazine ad and even a video, and you will be able to see the model topless, wearing only her Wonderbra.

By getting passing consumers to stop and interact with their billboards and ads, Wonderbra has come up with a way for people to pay attention and notice their campaign instead of just brushing it off as another ad. The Wonderbra Decoding App is a great example of an advertisement going viral in order to reach the most consumers.