Effects of key size and key layout on numeric data entry performance with touch screens
Department of Systems Engineering and Engineering Management, City University of Hong Kong, Kowloon Tong, Hong Kong
ABSTRACT: Touch screen displays are prevalently used in a variety of devices ranging from personal mobile devices to public kiosk for information access or self-service nowadays. In most circumstances, a numeric keypad is utilized as an input device and it competes with other displayed information for the limited screen space, underlying the importance of optimizing the design of keypads for improved usability. The present study examined the effects of key size (large: 20 × 20 mm, and small: 14 × 14 mm)—and ...
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