Let me grab this: a comparison of EMS and vibration for haptic feedback in free-hand interaction
https://gyazo.com/7cf49327bd4bd3d3e98d798e205ce887
EMS/振動子で空中haptic feedback
https://dl.acm.org/citation.cfm?id=2582099
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Large Displays
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Tactile Feedback
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Haptic Feedback
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Electrical Muscle Stimulation
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Free-hand Interaction