Ability-Based Optimization: Designing Smartphone Text Entry Interface for Older Adults

  • Sayan Sarcar
  • Jussi Jokinen
  • Antti Oulasvirta
  • Xiangshi Ren
  • Chaklam Silpasuwanchai
  • Zhenxin Wang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10516)

Abstract

Beside decreasing the abilities, individual difference prevails among older adults, as some individuals are completely healthy at the age 90 while some are not at even 60. In context of touchscreen interface design, it is critical to understand the design space as a function of abilities. In this work, we articulate a better understanding of the effects of ageing and examine their HCI task performing capabilities in terms of interfaces design. We design a text-entry interface in particular, as ageing users often achieve slow text entry performance, thus proving to be a bottleneck for technology use. Our developed text entry interface is tuned based on the parameter values for Elderly having finger tremor. We present initial study results showing the improvement of the accuracy of touch typing in smartphone over the baseline Qwerty keyboard. By carefully considering other sensorimotor abilities, we believe that the current smartphone text-entry interface designs will become more usable to the ageing populations.

Keywords

Ability-based design Aging users Text entry interface Tremor 

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Copyright information

© IFIP International Federation for Information Processing 2017

Authors and Affiliations

  • Sayan Sarcar
    • 1
  • Jussi Jokinen
    • 2
  • Antti Oulasvirta
    • 2
  • Xiangshi Ren
    • 1
  • Chaklam Silpasuwanchai
    • 1
  • Zhenxin Wang
    • 1
  1. 1.Center for Human-Engaged ComputingKochi University of TechnologyKamiJapan
  2. 2.Aalto UniversityEspooFinland

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