Augmented Reality Projects Web Data Onto the Real World

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Augmented reality overlays information from the Web on top of objects in the real world, typically when a user points a mobile phone camera at objects in the real world. In some sense, augmented realtiy takes Web accessible data and projects it in real time onto physical objects viewed by the camera. 

There are all sorts of prosaic applications one can imagine. Helping people buy shoes and clothing is an obvious commercial example.