Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Token-Based Acces to Digital Information
HUC '99 Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing
Graspable user interfaces
Visual touchpad: a two-handed gestural input device
Proceedings of the 6th international conference on Multimodal interfaces
PlayAnywhere: a compact interactive tabletop projection-vision system
Proceedings of the 18th annual ACM symposium on User interface software and technology
Getting a grip on tangible interaction: a framework on physical space and social interaction
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Rubber shark as user interface
CHI '06 Extended Abstracts on Human Factors in Computing Systems
reacTIVision: a computer-vision framework for table-based tangible interaction
Proceedings of the 1st international conference on Tangible and embedded interaction
Proceedings of the 2nd international conference on Tangible and embedded interaction
Bonfire: a nomadic system for hybrid laptop-tabletop interaction
Proceedings of the 22nd annual ACM symposium on User interface software and technology
Tangible User Interfaces: Past, Present, and Future Directions
Foundations and Trends in Human-Computer Interaction
Proceedings of the international conference on Multimedia
Portico: tangible interaction on and around a tablet
Proceedings of the 24th annual ACM symposium on User interface software and technology
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Current design guidelines for conventional tangible systems suggest that the representational significance of tangible tokens is an important consideration in the design of tangible interaction, especially in collaborative contexts. Such advice might be assumed to imply that nomadic tangible systems that employ improvised tokens are liable to have highly impaired usability. In this paper we describe a proof of concept experiment for Kolab, a nomadic tangible interaction system that permits any surface to be appropriated as a collaborative tabletop, and which affords the use of a wide range of appropriated artifacts as improvised tangibles. We demonstrate an approach for realizing the necessary interaction techniques combining tangibles and hand gestures using a fusion of image and depth sensing. We present the results of a user study showing that while users' choices of artifacts were seen to follow an unexpected pattern, various artifacts were appropriated and improvised as tangibles, and the system was found to be both usable and well able to support user collaboration.