Haptic Holograms

In New Scientist:  Because we were dealing with products that improved sensory interactions like touch, we were always interested in how to connect digital and sensory.  Here another interesting example.  " ... Feeling is believing. A system that uses sound waves to project "haptic holograms" into mid-air – letting you touch 3D virtual objects with your bare hands – is poised to bring virtual reality into the physical world. ... Adding a sense of touch as well as sight and sound will make it easier to completely immerse yourself in VR. And the ability to feel the shape of virtual objects could let doctors use their hands to examine a lump detected by a CT scan, for example. What's more, museum visitors could handle virtual replicas of priceless exhibits while the real thing remained safely behind glass. ... "