Manipulating Images by Fingertip in Thin Air

The Heliodisplay is an interactive technology that projects into the air above the machine still or moving images that can be manipulated with a fingertip. The images are two-dimensional, and they are not holograms. The Heliodisplay’s inventor, Chad Dyner, says the technology could one day replace conventional cathode-ray tubes, liquid-crystal displays and plasma screens