Here are a couple of AR apps. The first one is created by Total Immersion and they tout the "Magic Mirror" as the "first AR app for the iPad." The "magic" element is fun but I'm more excited with the fact there is finally a decent mirror app.
And here movie-tie in app with Rio:
There has been debate whether you should invest money in AR. Some contend it is a big waste of $..., likened to QR codes being a waste of time/money*. [*Also if you are going to do QR, don't fail like Jet Blue].
There is a significant front-end barrier with users downloading augmented-reality apps. I am fascinated with AR but there is a major assumption that users are going to waste their time to listen to your brand. While AR is pretty cool, these technologies still present a massive moat to the brand message. AR is still in its infancy, and it may become an easier, more integrated technology in the very near future, but the fact of the matter is we are not there yet. It will be very exciting to see how marketers use this medium to communicate while reconciling the barriers AR presents.