“Layered Touch Panel”
“…The Input Device with Two Touch Panel Layers”
by Yujin Tsukada, Takeshi Hoshino (CHI 2002)
- “…two touch panel layers, so that it is able to distinguish two touch states such as ‘finger on screen’ and ‘finger above screen’.”
- Adds an invisible infrared field about 20mm above the physical touch screen.
- Allows for a “rollover effect” for buttons or screen elements.
My thoughts:
- Follows Buxton’s “3-State Model of Graphical Input“:
- No touch
- Touch invisible proximity layer
- Touch visible touchscreen
- Similar to my TRKBRD prototype, but that the top layer is being used to augment the bottom layer. The top layer is not being used as a separate input interface, but as a way to make the bottom layer more intelligent. Could this be used to help define the differences of “layering” and “stacking” layers of interaction?

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