Microsoft’s Applied Sciences director, Steven Batchiche, shows off the latest gesture technology in a video from Microsoft Research on YouTube. He shows off some holographc technology that follows you whereever you go, a multiimage visual that gives different images for different people standing in different parts of the room. From here, any movements you make are rendered into a drawing both on the PC’s monitor and the retroreflective screen (by the projector) This allows you to draw without using a mouse or touching the screen.”]
Source: https://www.csoonline.com/article/2127491/microsoft-shows-off-the-latest-in-gesture-interfaces.html

