Da Tao
ABSTRACT
Touchscreen has been increasingly used in human-computer interfaces in a variety of moving and vibration conditions, such as ships, cars, aircrafts and other transportation vehicles. However, little is known about touchscreen use in vibration conditions. This study investigated the effects of task precision requirement (locating precision ≥ 90%, ≥ 95% and ≥ 99%) on touchscreen use among varied vibration conditions (static, slight and moderate). Twenty participants participated in an experiment in which they performed drag and zoom touchscreen tasks. The results indicated that vibration and task precision requirement yielded significant effects on touchscreen performance. Vibration would impair touchscreen use performance in terms of reduced accuracy rate. As task precision requirement on locating precision increased, touchscreen performance became worse, as indicated by decreased accuracy rate. Task precision requirement was found to interact with vibration. The findings could help improve the design of usable touchscreen technology in vibration conditions.
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