Passive yet Expressive TouchTokens

Rafael Morales González 1, 2, 3 Caroline Appert 1, 2, 3 Gilles Bailly 4, 5, 6 Emmanuel Pietriga 1, 2, 3
1 Université Paris-Saclay
2 ILDA - Interacting with Large Data
LRI - Laboratoire de Recherche en Informatique, Inria Saclay - Ile de France
3 LRI - Laboratoire de Recherche en Informatique
4 CNRS - Centre National de la Recherche Scientifique
5 UPMC - Université Pierre et Marie Curie - Paris 6
6 ISIR - Institut des Systèmes Intelligents et de Robotique
Abstract : TouchTokens are passive tokens that can be recognized on any capacitive surface based on the spatial configuration of the fingers that hold them. However, interaction with these tokens is confined to the basic two-state model of touch interaction as the system only knows the tokens' position and cannot detect tokens that are not touched. We increase the expressive power of TouchTokens by introducing laser-cut lattice hinges in their design, so as to make them flexible. A new recog-nizer, that analyzes the micro-movements of the fingers that hold the tokens, enables the system to detect when a token is left on the surface rather than taken off it. It can also detect bend events that can be mapped to command triggers, and a squeezed state that can be used for quasi-modal interaction.
Keywords : User Interfaces - Input devices and strategies Multi-Touch input Micro-movements Tangible interaction
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Conference papers
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Rafael Morales González, Caroline Appert, Gilles Bailly, Emmanuel Pietriga. Passive yet Expressive TouchTokens. Proceedings of the 35th SIGCHI conference on Human Factors in computing systems, May 2017, Denver, United States. pp.3741 - 3745, ⟨10.1145/1978942.1979143⟩. ⟨hal-01562021⟩

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