People have never been satisfied with just watching the action on a screen, they want to be immersed in it. What better way than with our powerful sense of smell? Japanese researchers from the Tokyo University of Agriculture and Technology have developed a smelling screen that puts the nose into play.
While early versions of "Smell-O-Vision" in movie theaters worked by floating odors into the air, the new screen is a bit more sophisticated. The scents can be located on specific parts of the screen. That means a person onscreen could be waving a piece of bacon around in the upper corner, and the smell would emanate from the same spot.
Source: CNet. Read full article. (link)