Google has set the code and the manufactures tech specs for Google Cardboard VR on opensource.
” With Cardboard and the Google VR software development kit (SDK), developers have created and distributed VR experiences across both Android and iOS devices, giving them the ability to reach millions of users. [ source ]
” While we’ve seen overall usage of Cardboard decline over time and we’re no longer actively developing the Google VR SDK, we still see consistent usage around entertainment and education experiences, like YouTube and Expeditions, and want to ensure that Cardboard’s no-frills, accessible-to-everyone approach to VR remains available. – Nov. 8, 2019. [ source ]
“Google Cardboard is not a dead end as some may say. Google set it on open source. You can easily live with it that there are no body sensors in the Cardboard concept. We speak of stepping into a first VR experience from the side of art reception by kids who created the world inside by themselves. No one knows where the development of professional HMD Headsets will go, if ever mass markets will be reached. On the other hand the development of smartphones will continue on high speed, smartphones will be able to host and air VR, maybe by using 5G.” – From a white paper by Reiner Schneeberger, “Only what we do is real. Let us do VR.” VWBPE 2020
About High-end HMD Devides:
If you had asked me when we started the company [High Fidelity] in 2014, I’d have said that by now there would be several million people using HMDs daily, and we’d be competing with both big and small companies to provide the best platform—but I was wrong. Daily headset use is only in the tens of thousands, almost all for entertainment and media consumption, with very little in the way of general communication, work, or education.
– Philip Rosedale, Toward A Digital World, May 7th 2019