Nice light computational module for huds device. Random search engine project pick:[0]

Perhaps also basis for a table coaster 3d hologram[1]

Adding to card thickness / modularity:

   pop-up hologram display.[2][3]

   projected keyboard/display[4] & gain ability to respond to text messages!
   

--------------------------------------------------

[0] : https://www.instructables.com/Smart-Glasses-V2/

[1] : https://www.youtube.com/watch?v=xHbQRcIWxC8

[2] : https://www.youtube.com/watch?v=vRo8m_a6F54

[3] : https://www.youtube.com/watch?v=wM_Byrv9iBI

[4] : https://www.youtube.com/watch?v=gTnHEzshdIQ