Google has released an app that lets you slot your Android phone into some cardboard to make a virtual-reality headset. The app, titled Cardboard, is a clever way of making virtual reality accessible to a large number of people at relatively little cost.
Virtual reality 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 outcome was Cardboard, which Google describes as "a no-frills enclosure that transforms a phone into a basic VR headset, and the accompanying open software toolkit that makes writing VR software as simple as building a web or mobile app".
To build it yourself, you'll need a load of corrugated cardboard (Google suggests using an extra-large pizza box). A pair of lenses with a 40mm focal distance to keep the screen in focus, two magnets to act as hardware buttons, some velcro strips and an eight cm rubber band to hold the phone in place.
An NFC tag to launch the app by tapping the headset. The construction is done with these tools, a ruler, glue, scissors and a Stanley knife., Once you've gathered all that together, then use the design card below..

If you get it right ,it will look like this, happy construction.

read more wired.co.uk