Touch screen user interfaces for older adults: button size and spacing

Authors:
Zhao Xia Jin;Tom Plocher;Liana Kiff
Affiliations:
Honeywell Technology Solutions Laboratory, Shanghai, China;Honeywell Automation and Control Solutions Laboratory, Minneapolis, Minnesota;Honeywell Automation and Control Solutions Laboratory, Minneapolis, Minnesota
Venue:
UAHCI'07 Proceedings of the 4th international conference on Universal access in human computer interaction: coping with diversity
Year:
2007

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Abstract

This study investigated the optimal button size and spacing for touch screen user interfaces intended for use by older adults. Current recommendations in the literature are aimed at general audiences and fail to consider the specific needs of older adults. Three independent variables, button size, button spacing, and manual dexterity were studied in two experiments that measured reaction time, accuracy and user preferences. Design recommendations for touch screen button size and spacing for older adults are stated based on these experiments. The paper also discusses the role of manual dexterity in designing appropriate touch screen interfaces for older adults.