https://techcrunch.com/2021/05/18/google-is-making-a-3d-life-size-video-calling-booth/

Google is working on a video calling booth that uses 3D imagery on a 3D display to create a lifelike image of the people on both sides. While it’s still experimental, “Project Starline” builds on years of research and acquisitions, and could be the core of a more personal-feeling video meeting in the near future.

The system was only shown via video of unsuspecting participants, who were asked to enter a room with a heavily obscured screen and camera setup. Then the screen lit up with a video feed of a loved one, but in a way none of them expected: