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All developers actively developing experiences for Google Cardboard should use the open source Cardboard SDKs for iOS, Android NDK, and Unity XR Plugin.
The Daydream View VR headset is no longer available for purchase as of October 15, 2019. As of November 2023, previously supported devices will no longer be able to download and install Google VR Serivces (Android application ID com.google.vr.vrcore) for new users.

Daydream Controller

The Daydream controller combines a simple, intuitive user interface with 3DoF functionality for expressive design. All Daydream apps require the Daydream controller so as a developer you can design experiences for a standardized input model.

Some common ways the Daydream controller can be used are:

Ray-pointer: Interacting with 2D UI in worldspace. For example, choosing files from a 2D file-selector in a media app or selecting icons from a 2D in-app inventory screen.
Gesture-based input: Using the controller as a proxy for a physical motion, such as throwing a frisbee or swinging a baseball bat.
Movement: Using the controller to allow the user to move around the environment, for example, through the use of teleportation.

Features

The Daydream Controller includes the following features:

Controller feature	Description
3DoF tracking	See the degrees of freedom page.
Touchpad	Can detect touching, swiping and clicking. Fully customizable for your app. Example uses include scrolling through a menu or moving through the environment.
App button	Fully customizable for your app. Example uses include opening an in-app menu or performing a special action.
Daydream button	Press to open the Daydream Dashboard. Press and hold to recenter your view and controller. Cannot be customized.
Volume buttons	Can be used to adjust your app volume. Cannot be customized.
Status light	Displays controller status.
Wrist-strap holes	Can be used to attach the provided wrist-strap.