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Tagg is a newly launched iPhone application that uses offline facial recognition to detect the faces of your friends in your photos, so you can tag them and upload them to Facebook or post them to Twitter. The app takes advantage of new frameworks in iOS5, like CoreImage, for example, which among other things also enables dead simple face detection. Because of this, Tagg only works on devices running iOS 5.0 or later. The app itself is really easy to use. You add people from your address book on your phone, Facebook or Twitter to start, then you either snap a photo or choose one from the camera roll to begin tagging. Tagg automatically recognizes the faces in the photo and highlights them with a red square. You just tap on the square and enter the tag. When picking the person’s name you want to use as the tag, you don’t Read More