Google Cardboard Stereoscope
The Google Cardboard is a stereoscopic 3D viewer that is flat-packed with Ikea-style assembly instructions. What you assemble is something like a cardboard Viewmaster. The eye holes have convex plastic lenses that act like magnifying glasses. The top is secured with Velcro that you peel back to insert your smartphone.A rubber band provides enough friction so your phone stays in place and an NFC panel triggers either the Google I/O app or the accompanying Cardboard app. Video demo here under.
How it Works - Do it Yourself
To interact with Cardboard, simply move your head around to navigate and slide the magnetic switch on the left side to click or tap. Tilting your head 90 degrees to the right opens the main menu.
If you're keen to build your own you can use the plans on Google's Website.
Your Own Personal VR Viewer
Virtual reality (VR) has made exciting progress over the past several years. However, developing for VR still requires expensive, specialized hardware. Thinking about how to make VR accessible to more people, a group of VR enthusiasts at Google experimented with using a smartphone to drive VR experiences. The result is Cardboard, a no-frills enclosure that transforms a phone into a basic 3D VR headset, and the accompanying open software toolkit that makes writing VR software as simple as building a web or mobile app.
By making it easy and inexpensive to experiment with VR, we (Google) hope to encourage developers to build the next generation of immersive digital experiences and make them available to everyone. (from Google Cardboard web site)
Who Did It