You don't need a headset to see these 'holograms'
 

Genuine, Princess Leia-type color holograms are still pretty rare. Most of what we think of as holograms are actually Pepper's Ghost, Tupac-style illusions that trick your brain by using 2D images to simulate 3D. To make that work even better, a Fren...

https://www.engadget.com/2017/07/05/...ese-holograms/