his page describes how to build and deploy the demo Cardboard scene included in the Cardboard SDK for Unity, presuming little prior Unity experience.
If you are looking for instructions for building Cardboard on iOS with Unity, see the Getting Started with Unity for iOS page.
The demo recreates the Cardboard SDK for Android Treasure Hunt demo app within Unity to illustrate:
Using the CardboardMain prefab to set up a stereo camera rig that tracks the user's head orientation.
Handling trigger input events, such as magnet click.