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Are membrane keyboards closer to linear or tactile? 

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Papers (10)Insight
Proceedings ArticleDOI
Qian Wan, Ryan P. Adams, Robert D. Howe 
16 May 2016
26 Citations
Results show that tactile signals are highly variable despite good repeatability in grasping conditions.
These results show that spatial distortions of touch are well characterized by a geometrically simple stretch of tactile space.
We hypothesize that people will attribute tactile feedback to the key being pressed, even with global tactile feedback, provided that the tactile signal on other parts of the surface is sufficiently attenuated.
These results show that distortions in perceived tactile distance can be characterized by geometrically simple and coherent deformations of tactile space.
from this study reveal the importance of tactile feedback to user typing performance and satisfaction.
A further conclusion is that the afferent inputs are processed differently in tactile subsystems.
Thus, the sensing range and sensitivity of the present tactile sensor can also be tuned after the change of polymer membrane stiffness.
Results show that standard soft keyboards perform best, even at small space allocations.
Our findings are useful for developing flat keyboards with assistive information through sensory feedback.
Applications: These findings may influence keyboard standards and the design of keyboards.