Study on Size Design of Touch-Sensitive Button

To examine the effects of button size with different shape on the usability of touch screen devices. Considering the forefinger operation, the subjective and objective evaluation were combined to assess the ergonomics of the touch-sensitive button size, so as to obtain the recommended range of button size. With the size of touch-sensitive buttons specified setting from 3 mm to 25 mm respectively, where the step size was 2 mm, thirsty subjects participated in the test. One-way ANOVA was used to analyze the operational performance (reaction time and error rate) at different key sizes, and then the S-N-K-hoc multiple pairwise comparison test was used for pairwise comparison. The results demonstrated that the recommended range for rounded corner touch button is from 11 mm to 19 mm, round touch button in the recommended range is from 13 to 19 mm. It is also confirmed that the rounded corner touch buttons are superior to round touch buttons in the same size. This research can provide a basis for the design of button size of enterprise electronic products, and has important guiding significance.