Is it really "holographic", or just stereoscopic?
It works by stereoscopy. There maybe something "holographic" in the math used to compute what to show each eye, but there is no projection of light into space to form holographic images that people can walk around.
Since images are formed on your retina by focusing real lightfields, a true holographic display which produced a complete lightfield would be much more realistic and comfortable to view than a flat stereoscopic image is.