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with a webcam and some colored markers, here is a mutitouch app , easy it seems to use .. many app to develop from it ... coz it's not block on a screen but in space !

coz this one is not just a flat used screen, but uses further colored markers to detect the movements, and create other "in space for kids" app.

this API permits to track the face, easily... using in interfaces or any 3D immersion...

coz of interactivity... tracking with webcam seems an other way of interacting.. next use of whiteboard ..? perhaps to mimic or to use avatars to let the children use their own personality inside