“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.”
I'm not sure touching is important. Have a touchpad for rotation if you are too lazy to physically move around object. Buttons for 45^*^ rotations at a time would be even cheaper. Then, if purpose of display is to have many people around it, for "presentation purposes", then a 2d screen and 3d rotation software will show objects in much better resolution and cheapest of all, while focusing on angle that matches presentation point.
I'm not sure touching is important. Have a touchpad for rotation if you are too lazy to physically move around object. Buttons for 45^*^ rotations at a time would be even cheaper. Then, if purpose of display is to have many people around it, for "presentation purposes", then a 2d screen and 3d rotation software will show objects in much better resolution and cheapest of all, while focusing on angle that matches presentation point.