“What we see in films and call holograms are typically volumetric displays,” said Bouzbib, the lead author of the work. “These are graphics that appear in mid-air and can be viewed from various angles without the need for wearing virtual reality glasses. They are called true-3D graphics.”
Here is a link to the PDF that details the work: https://hal.science/hal-04981007v1/file/FlexiVol___CHI25 (2).pdf
i took “touchable” to mean you could literally feel the shape with your senses, but it appears what they are saying is it’s a way to interact with it, via pass through in various ways, etc. still pretty cool though
Perhaps pokable is a more apt description.
There are touchable graphics at the expo in Osaka. I think they‘re created by sonic waves and feel „fluffy“.
i guess they just mean like a 2D “touch”screen.