The first version of Cardboard could fit phones with screens up to 5.7 inches (140 mm), and used magnets as input buttons, which required a compass sensor in the phone. The result is a stereoscopic (3D) image with a wide field of view. A Google Cardboard–compatible app splits the smartphone display image into two, one for each eye, while also applying barrel distortion to each image to counter pincushion distortion from the lenses. Once the kit is assembled, a smartphone is inserted in the back of the device and held in place by the selected fastening device. Google provides extra recommendations for large scale manufacturing, and pre-assembled kits based on these plans are available for less than US$5 from multiple vendors, who have also created a number of Cardboard variations. The parts that make up a Cardboard viewer are a piece of cardboard cut into a precise shape, 45 mm focal length lenses, magnets or capacitive tape, a hook and loop fastener (such as Velcro), a rubber band, and an optional near field communication (NFC) tag. Pre-manufactured viewers were only available from third-party vendors until February 2016, when Google began selling their own through the Google Store. The headset specifications were designed by Google, which made the list of parts, schematics, and assembly instructions freely available on their website, allowing people to assemble Cardboard themselves from readily available parts. Google Cardboard headsets are built out of simple, low-cost components. Viewer assembly and operationĪ Cardboard viewer unassembled (top) and assembled (bottom) As of November 2021, third-party companies continue to sell compatible viewers. In March 2021, the Google Store stopped selling Cardboard viewers. Following declining interest in Cardboard, Google announced in November 2019 that it would open-source the platform's SDK. After the success of Cardboard, Google developed an enhanced VR platform, Daydream, which was launched in 2016. By November 2019, over 15 million viewer units had shipped. Through March 2017, over 160 million Cardboard-enabled app downloads were made.
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The Cardboard software development kit (SDK) was released for the Android and iOS operating systems the SDK's VR View allows developers to embed VR content on the web as well as in their apps. It was introduced at the Google I/O 2014 developers conference, where a Cardboard viewer was given away to all attendees.
The platform was created by David Coz and Damien Henry, French Google engineers at the Google Cultural Institute in Paris, in their 20% " Innovation Time Off". To use the platform, users run Cardboard-compatible mobile apps on their phone, place it into the back of the viewer, and view content through the lenses. Users can either build their own viewer from simple, low-cost components using specifications published by Google, or purchase a pre-manufactured one. Named for its fold-out cardboard viewer into which a smartphone is inserted, the platform was intended as a low-cost system to encourage interest and development in VR applications. Google Cardboard is a discontinued virtual reality (VR) platform developed by Google. at the Wayback Machine (archived May 6, 2023) Second-generation Google Cardboard viewer
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