“FingeRing”: a full-time wearable interface
CHI '94 Conference Companion on Human Factors in Computing Systems
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ACM Transactions on Computer-Human Interaction (TOCHI) - Special issue on human-computer interaction with mobile systems
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Proceedings of the 22nd annual ACM symposium on User interface software and technology
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UIST '10 Proceedings of the 23nd annual ACM symposium on User interface software and technology
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Nenya: subtle and eyes-free mobile input with a magnetically-tracked finger ring
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INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part I
iRing: intelligent ring using infrared reflection
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Proceedings of the 25th annual ACM symposium on User interface software and technology
GaussSense: attachable stylus sensing using magnetic sensor grid
Proceedings of the 25th annual ACM symposium on User interface software and technology
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We present FingerPad, a nail-mounted device that turns the tip of the index finger into a touchpad, allowing private and subtle interaction while on the move. FingerPad enables touch input using magnetic tracking, by adding a Hall sensor grid on the index fingernail, and a magnet on the thumbnail. Since it permits input through the pinch gesture, FingerPad is suitable for private use because the movements of the fingers in a pinch are subtle and are naturally hidden by the hand. Functionally, FingerPad resembles a touchpad, and also allows for eyes-free use. Additionally, since the necessary devices are attached to the nails, FingerPad preserves natural haptic feedback without affecting the native function of the fingertips. Through user study, we analyze the three design factors, namely posture, commitment method and target size, to assess the design of the FingerPad. Though the results show some trade-off among the factors, generally participants achieve 93% accuracy for very small targets (1.2mm-width) in the seated condition, and 92% accuracy for 2.5mm-width targets in the walking condition.