Ability-based optimization: Designing smartphone text entry interface for older adults

Sayan Sarcar*, Jussi Jokinen, Antti Oulasvirta, Xiangshi Ren, Chaklam Silpasuwanchai, Zhenxin Wang

*Corresponding author for this work

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

4 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationHuman-Computer Interaction - INTERACT 2017 - 16th IFIP TC 13 International Conference, Proceedings
Number of pages6
Volume10516 LNCS
ISBN (Print)9783319680583
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventIFIP TC.13 International Conference on Human–Computer Interaction - Mumbai, India
Duration: 25 Sept 201729 Sept 2017
Conference number: 16

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume10516 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


ConferenceIFIP TC.13 International Conference on Human–Computer Interaction
Abbreviated titleINTERACT


  • Ability-based design
  • Aging users
  • Text entry interface
  • Tremor


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