Influences of tactile-dot height and tip radius of curvature on the operational performance of cellular phones

Wataru Toyoda, Kouki Doi, Hiroshi Fujimoto

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Tactile dots located on operation keys of consumer products such as cellular phones contribute to improving accessibility for older people and people with visual impairment. The Japanese Standards Association (2000) and the International Organization for Standardization (2011) standardized tactile dots. However, reliable data on the appropriate sizes and the shapes was not necessarily available. The purpose of this study is to evaluate influences of the height (0.1, 0.3, 0.55, and 0.75 mm) and the tip radius of curvature (0.1, 0.3, 0.5, 0.7, and 0.9 mm) of tactile dots on the operational performance of cellular phones in younger and older people. Sighted younger and older participants, whose hand was covered by a curtain, operated cellular phones with a tactile dot on its key 5 and without a tactile dot. As the result, both participants performed better at a particular height with larger tip radius of curvature. Furthermore, older participants operated better at high dots like 0.55-0.75 mm. In contrast, younger participants performed better at 0.3 mm and relatively poorly at 0.1 mm and 0.75 mm. Thus, comparatively high tactile dots are useful for improving the accessibility of products for the older and there is an appropriate height range for the younger.

    Original languageEnglish
    Pages (from-to)5375-5377
    Number of pages3
    JournalWork
    Volume41
    Issue numberSUPPL.1
    DOIs
    Publication statusPublished - 2012

    Fingerprint

    Cell Phones
    Touch
    Vision Disorders
    Hand

    Keywords

    • Accessibility
    • Consumer products
    • ISO 24503
    • JIS S 0011
    • Operational performance

    ASJC Scopus subject areas

    • Public Health, Environmental and Occupational Health
    • Rehabilitation
    • Medicine(all)

    Cite this

    Influences of tactile-dot height and tip radius of curvature on the operational performance of cellular phones. / Toyoda, Wataru; Doi, Kouki; Fujimoto, Hiroshi.

    In: Work, Vol. 41, No. SUPPL.1, 2012, p. 5375-5377.

    Research output: Contribution to journalArticle

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