A zooming interface for accurate text input on mobile devices

Authors:
Naoto Koarai;Takashi Komuro
Affiliations:
Saitama University, Saitama city, Saitama prefecture, Japan;Saitama University, Saitama, Japan
Venue:
CHI '13 Extended Abstracts on Human Factors in Computing Systems
Year:
2013

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Abstract

In this paper, we propose a system which uses two cameras in combination with a touch panel. The cameras detect a continuous finger depth, which realizes zooming in/out the screen together with the finger movement. The system realizes comfortable selection operation of small objects by directly touching enlarged objects. We conducted an experiment and confirmed the effectiveness of the proposed method with zooming. In the virtual keyboard application, the number of mistypes with the proposed method was less than half of the number without zooming.