Ultra-tangibles: creating movable tangible objects on interactive tables

Authors:
Mark Marshall;Thomas Carter;Jason Alexander;Sriram Subramanian
Affiliations:
University of Bristol, Bristol, United Kingdom;University of Bristol, Bristol, United Kingdom;Lancaster University, Lancaster, United Kingdom;University of Bristol, Bristol, United Kingdom
Venue:
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Year:
2012

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Abstract

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.