Abstract
Touch-screen smart phones have gradually occupied the market of traditional Qwerty Phones and become the mainstream products of mobile phone industry. However, few ergonomics research has been conducted on the touch screens of smart phones, while it has led to tendosynovitis among users owing to the overuse of thumbs. Sizes of smart phones in market range from 3.0 to 7.0 inches. What’s more, 4.0 inches and above are the common size of current touch screens. Also, considering the users’ habits, one-hand operation is preferred when the other hand is occupied. This paper has collected hand parameters of 80 subjects and has adopted an experiment which includes the performance testing and surveys of subjective evaluation by means of usability evaluation. After analysing correlation between touch-screen sizes and operation performances, the result indicates that under one-hand operation, the size of touch screen affects the operation performance significantly. However, it’s hard to implement one-hand operation if the touch-screen size is over 5.7 inches. Additionally, the thickness of smart phones affects the degree of comfort remarkably.
Highlights
Nowadays, touch-screen technologies have been widely adopted in mobile phone industry and smart phones with touch screens have become the focus of commercial competitions among mobile phones manufacturers
Touch-screen smart phones have gradually occupied the market of traditional Qwerty Phones and become the mainstream products of mobile phone industry
Few ergonomics research has been conducted on the touch screens of smart phones, while it has led to tendosynovitis among users owing to the overuse of thumbs
Summary
Touch-screen technologies have been widely adopted in mobile phone industry and smart phones with touch screens have become the focus of commercial competitions among mobile phones manufacturers. These muscles get fatigue very fast on single-handed performance. The paper made a research on the influence degrees of different parameters to each other based on correlation analysis
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