Applying electric field sensing to human-computer interfaces
CHI '95 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the 2nd international conference on Tangible and embedded interaction
The tangible user interface and its evolution
Communications of the ACM - Organic user interfaces
Lumino: tangible blocks for tabletop computers based on glass fiber bundles
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Manual deskterity: an exploration of simultaneous pen + touch direct input
CHI '10 Extended Abstracts on Human Factors in Computing Systems
CapWidgets: tangile widgets versus multi-touch controls on mobile devices
CHI '11 Extended Abstracts on Human Factors in Computing Systems
Proceedings of the 2012 Joint International Conference on Human-Centered Computer Environments
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We propose two approaches to sense tangible objects on capacitive touch screens, which are used in off-the-shelf multi-touch devices such as Apple iPad, iPhone, and 3M's multi-touch displays. We seek for the approaches that do not require modifications to the panels: spatial tag and frequency tag. Spatial tag is similar to fiducial tag used by tangible tabletop surface interaction, and uses multi-point, geometric patterns to encode object IDs. Frequency tag simulates high-frequency touches in the time domain to encode object IDs, using modulation circuits embedded inside tangible objects to simulate high-speed touches in varying frequency. We will show several demo applications. The first combines simultaneous tangible + touch input system. This explores how tangible inputs (e.g., pen, easer, etc.) and some simple gestures work together on capacitive touch panels.