FingerPad: Private and subtle interaction using fingertips

Li-Wwei Chan, Rong Hao Liang, Ming Chang Tsai, Kai Yin Cheng, Chao Huai Su, Mike Y. Chen, Wen-Huang Cheng, Bing Yu Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

104 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationUIST 2013 - Proceedings of the 26th Annual ACM Symposium on User Interface Software and Technology
Pages255-260
Number of pages6
DOIs
StatePublished - 20 Nov 2013
Event26th Annual ACM Symposium on User Interface Software and Technology, UIST 2013 - St. Andrews, United Kingdom
Duration: 8 Oct 201311 Oct 2013

Publication series

NameUIST 2013 - Proceedings of the 26th Annual ACM Symposium on User Interface Software and Technology

Conference

Conference26th Annual ACM Symposium on User Interface Software and Technology, UIST 2013
CountryUnited Kingdom
CitySt. Andrews
Period8/10/1311/10/13

Keywords

  • Eyes-free interaction
  • Finger-mounted device
  • Instant-available
  • Nail device
  • Private input
  • Subtle interaction

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