Influence of Touch Screen Key Design on Interaction Performance and User Experience
To systematically investigate the effects of sound feedback,button size,and button spac-ing on touchscreen interaction performance and workload,two experiments were designed and con-ducted.In the experiments,30 and 24 subjects were asked to perform the digit input task under the combination condition of sound feedback(with/without)and key size(5 mm,10 mm,20 mm),as well as key size(8 mm,11 mm,14 mm,17 mm)and key spacing(1 mm,4 mm)respectively.The input speed,input accuracy and subjective evaluation data were recorded.The experimental re-sults showed that sound feedback could improve the interaction performance of the touch screen,es-pecially for the 5 mm key size condition.In terms of key size,there was no significant difference in the performance indexes between 10 mm and 20 mm key size conditions.When the key size de-creased to 8mm,the performance became worse.When the key size was reduced to 5 mm,the per-formance deteriorated significantly.The 14 mm key size had the best interaction performance and subjective satisfaction.In terms of key spacing,the input accuracy and subjective satisfaction of the touch screen under the condition of 4 mm key spacing were significantly higher than that of 1mm.Based on the experimental results and subsequent measurement of the width of the touch screen con-tact area,it is recommended that the minimum suitable key size is 11～14 mm,and the suitable key spacing is 4 mm,and sound feedback is recommended to be provided with touch screen interactions.
万方数据
维普
