Ultra-Tangibles: Creating Movable Tangible Objects on Interactive TablesMark Marshall, Thomas Carter, Jason Alexander, Sriram Subramanian, Ultra-Tangibles: Creating Movable Tangible Objects on Interactive Tables. Proceedings of the 30th International Conference on Human Factors in Computing Systems (CHI 2012). May 2012. PDF, 514 Kbytes. External information
Tangible objects placed on interactive surfaces allow users to employ a physical object to manipulate digital content. However, creating the reverse effect—having digital content manipulate a tangible object placed on the surface—is a more challenging task. We present a new approach to this problem, using ultrasound-based air pressure waves to move multiple tangible objects, independently, around an interactive surface. We describe the technical background, design, implementation, and test cases for such a system. We conclude by discussing practical uses of our system, Ultra-Tangibles, in the creation of new tangible user interfaces.
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