Researchers used two Wiimotes from Nintendo’s Wii gaming system to track a user’s hand as well as software that uses ultrasonic waves to create pressure on the user’s hand touching the projected hologram.
Professor Hiroyuki Shinoda from Tokyo University says:
“Up until now, holography has been for the eyes only, and if you’d try to touch it, your hand would go right through. But now we have a technology that also adds the sensation of touch to holograms.”
(via NTD Television)