Augmented reality on Android (again)

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AR is used more and more in games. The question is - is the technology already here?
http://en.wikipedia.org/wiki/Augmented_reality

 

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Here is some more advanced tracking - putting bear on the hand and carrying
[YT]http://www.youtube.com/watch?v=3vyooE24Mh4[/YT]
This one is from samsung app store.Free, but probably work only on samsung deviices
Samsung Apps