A 3D virtual reality headset constructed of cardboard, introduced in 2014 and terminated in 2021. Designed by Google and made by third parties, Cardboard held an Android smartphone and used the Cardboard app or a third-party app to display a stereoscopic view. The app was controlled by head movement and the smartphone's built-in accelerometer, as well as a magnet slider on the unit that interacted with the phone's magnetometer. See
accelerometer,
virtual reality and
Daydream VR.
Stereo Views in Cardboard
This is a Cardboard holder from Planetz Tech and a Galaxy Note phone. The current scene is from Google Earth, which is one of the demos in the Cardboard app. The silver circle on the left side is the magnet slider.