LightTouch: Passive Gadgets for Extending Interactions on Capacitive Touchscreens by Automating Touch Inputs

Kaori Ikematsu, Kunihiro Kato, Yoshihiro Kawahara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We present LightTouch, a passive gadget to enhance touch interactions on unmodified capacitive touchscreens. It simulates finger operations such as tapping, swiping, or multi-touch gestures using conductive materials and photoresistors embedded inside the objects. The touchscreen emits visible light and the photoresistor senses the level of this light, which changes its resistance value. By controlling the screen brightness, it connects or disconnects the path between the GND and the touchscreen, thus allowing the touch inputs to be controlled. In contrast to conventional physical extensions for touchscreens, our technique does not require continuous finger contact on the conductive part nor the use of batteries. Our technique opens up new possibilities for touch interaction such as for enhancing the trackability of tangibles beyond the simple automation of touch inputs.

Original languageEnglish
Title of host publicationUIST 2020 - Adjunct Publication of the 33rd Annual ACM Symposium on User Interface Software and Technology
PublisherAssociation for Computing Machinery, Inc
Pages10-12
Number of pages3
ISBN (Electronic)9781450375153
DOIs
Publication statusPublished - 2020 Oct 20
Event33rd Annual ACM Symposium on User Interface Software and Technology, UIST 2020 - Virtual, Online, United States
Duration: 2020 Oct 202020 Oct 23

Publication series

NameUIST 2020 - Adjunct Publication of the 33rd Annual ACM Symposium on User Interface Software and Technology

Conference

Conference33rd Annual ACM Symposium on User Interface Software and Technology, UIST 2020
CountryUnited States
CityVirtual, Online
Period20/10/2020/10/23

Keywords

  • 3d printing
  • capacitive touchscreen
  • tangible

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Software

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