Interacting with computer in a more natural way

There have been various developments in the interface between computer and human like finger print scanner, face identification system and lots more. Now there is one new addition to the interface methods namely 3-D interface in order to manage various layers of information that we interact with computer. By specific this can be called as SecondLight and it is the innovation touch based interface known as surface computing. This method used second projector and a diffuser which is switchable to obtain another layer of data. Therefore the projection of the image includes another image where one lies on the table surface whereas another one is simply hidden in the above.