In the 19 months it has been on the market, over 5 million units of Google Cardboard have been shipped. That's a huge jump from last May when the company announced during Google I/O that it had ...

Google Cardboard is an easy foray into VR — most anyone with a smartphone can use it, and it can be built at home for cheap. But still, that headset is often relegated to a desk or closet somewhere, ...