If this DIY answer to the next generation of immersive gaming and multimedia consumption had been announced on the first day of April, it would have been seen as one of Google's best pranks yet. Announced officially at the Google I/O developers conference on Wednesday by Sundar Pichai, senior vice president responsible for Android, the headset is one you construct yourself -- from cardboard -- and which replaces a fancy OLED screen with your existing Android handset.



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