Measuring touch bias of one thumb posture on direct touch-based mobile devices

Authors:
Kangwook Lee;Sangtae Kim;Sung-Hyon Myaeng
Affiliations:
KAIST (Korea Advanced Institute of Science and Technology), Daejeon, Republic of Korea;KAIST, Deajeon, Republic of Korea;KAIST (Korea Advanced Institute of Science and Technology), Daejeon, Republic of Korea
Venue:
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Year:
2013

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Abstract

Direct-touch interactive surfaces become pervasive in our daily lives due to personal mobile devices such as smartphones. However, inaccurate target pointing on direct touch-based mobile devices, which occurs due to the ambiguity of the user-aimed point estimation from the finger contact region, often causes trouble for users. To understand this problem of direct-touch interactions, we conducted an experimental study where we explored the touch bias of one thumb posture on direct touch-based mobile devices. Moreover, we proposed a novel method of splitting a touch surface into several regions; this method enables an analysis of the touch bias according to angular and longitudinal criteria.