A machine that clones objects into holographic images that people can actually touch has been created. "Place an object in one box, and a hologram of the object appears in another box. You can gently touch the hologram and it will react to your touch, which you can feel."
"The system concentrates ultrasound energy at the intersections of the real and clone objects, which creates pressure to the real objects. If the 'real object' is your finger, you feel contact force from the 3D clone object by the ultrasonic radiation pressure. At the same time, the same forces are applied to the original real object (of the clone) in the other workspace. The posture and the shape of the hand can be arbitrary."
"The difference of Haptoclone interaction from actual contact is the displayed force is limited to about 100mN per square centimeter or less and the value is decided arbitrarily. Besides, the force direction is basically normal to the surface. But produced contact positions and areas are faithfully controlled on the object, which can produce realistic tactile sensation in some classes of contact."
"It realizes various telehaptic experiences. Though a literal 'handshake' is impossible since the produced force is weak, it is possible to stroke the hand of the other side and lightly touch each other freely at arbitrary parts of the hand, sharing the haptic sensation. Stroked by a clone hand, you feel existence of multiple fingers as well as where you are touched. In some modified manners, haptic communication as a handshake and high-fived can be achieved."