CornerPen: Smart phone is the pen

Bong Gyu Jang, Myonghee Lee, Gerard J. Kim

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


The use of finger on the touchscreen is one of the most prevalent forms of input on mobile devices. However, due to the size of the finger tip, precise input is difficult and the presence of the finger on the touchscreen can often occlude the content in interaction. In this paper, we propose to install a sensor in the corner of the mobile device (e.g. smart phone) and transform the mobile device into a digital pen for making input for itself or other external devices. The system, dubbed "CornerPen" has many potential advantages in addition to those of the traditional pen-based input (vs. finger based) such as less occlusion, leveraging on tactile memory, and larger interaction surface. We have implemented and experimentally tested the CornerPen against the nominal finger-based touchscreen input system using two tasks, namely, flick-based icon browsing (search) and selection and free-form text input. Our results showed while the subjects did acknowledge the problem of occlusion with finger-based input on the touchscreen, the CornerPen approach still was not particularly effective nor preferred for the intended purpose, i.e. making precise input, and only exhibited comparable performance for simple flick/tab like input actions.

Original languageEnglish
Title of host publicationHuman-Computer Interaction
Subtitle of host publicationTowards Mobile and Intelligent Interaction Environments - 14th International Conference, HCI International 2011, Proceedings
Number of pages8
EditionPART 3
Publication statusPublished - 2011
Event14th International Conference on Human-Computer Interaction, HCI International 2011 - Orlando, FL, United States
Duration: 2011 Jul 92011 Jul 14

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 3
Volume6763 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other14th International Conference on Human-Computer Interaction, HCI International 2011
Country/TerritoryUnited States
CityOrlando, FL


  • Finger touch
  • Icon selection
  • Mobile interaction
  • Optical tracking
  • Pen-based interaction
  • Tactile memory
  • Usability

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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