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What is Google Cardboard?
Cardboard is a Google project to provide both an affordable, cardboard based, Virtual Reality viewer for your phone and software tools to create VR experiences that can place the user in another location or world.
How does it work?
The viewer places two lenses in front of the screen, and the software generates separate images with slightly different perspective for each eye, which the brain interprets as 3D. A gyroscope sensor in the phone is used to track head movement, and VR apps match the rendered image to the current view direction, allowing the user to look around.
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