When they wrote "your screen can display 3D photos", I thought it would be a hardware hack and not something that depends on a human physiology hack.

Something like stereoscopic GIFs come to mind, e.g. https://tenor.com/fr-CA/view/dain-stereoscopic-daingifs-3d-m...

In other words, taking the two images and swapping them quickly creates the illusion of depth.

Edit:

Looking into it, there's a word for it. Wiggle stereoscopy: https://en.wikipedia.org/wiki/Wiggle_stereoscopy