About 3 years ago, Light Blue Optics, a UK based technology innovator, introduced a product that will redefine the nature of touch screen controls. The Light Touch™, is an image projector that allows for any surface to be converted into a touch screen.
When combined with recent research undertaken by a Purdue University team, whereby a multi-touch system using a computer, video projector and kinect camera, has shown that hand gestures and movement characteristics can be defined by the individual user, it is possible that such a system could lead to new access control solutions that increase security for sensitive openings/areas. (see video after the jump)
In recent laboratory tests, the system has apparently shown a 98 percent accuracy rate in hand geometry and gesture recognition postures - a key ingredient in identifying individual users.
According to an abstract from the Purdue University news bulletin, "Multitouch surfaces are becoming prevalent, but most existing technologies are only capable of detecting the user's actual points of contact on the surface and not the identity, posture, and handedness of the user. In this paper, we define the concept of extended multitouch interaction as a richer input modality that includes all of this information. We further present a practical solution to achieve this on tabletop displays based on mounting a single commodity depth camera above a horizontal surface. This will enable us to not only detect when the surface is being touched, but also recover the user's exact finger and hand posture, as well as distinguish between different users and their handedness. We validate our approach using two user studies, and deploy the technique in a scratchpad tool and in a pen + touch sketch tool."
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