查看更多>>摘要：Vibrotactile feedback is known to have a positive impact on the user performance and experience of touchscreen input. Unfortunately, not all touchscreen devices have built-in haptics capabilities, public displays being a notable example, while the design options for vibrotactile feedback on conventional mobile devices, such as smartphones and tablets, are still limited. In this work, we propose leveraging commodity wearable devices, such as smartwatches, rings, and armbands, to enable vibrotactile feedback as closely as possible to the touch point when the touchscreen does not natively support haptics, and to complement existing haptics capabilities when the touchscreen already features them. To this end, we introduce Wear+Touch, a set of four interaction techniques designed to augment touchscreen input with vibrations delivered through wearable devices, from substituting to complementing, extending, and expanding on-screen vibrotactile feedback. We demonstrate Wear+Touch with several practical implementations involving a large touchscreen display, smartphone, tablet, smartwatch, smart ring, and armband as well as a custom wearable device that we designed for vibrations delivered simultaneously on the user’s index finger, wrist, and forearm. We also report empirical results from two controlled experiments involving a total of 40 participants, conducted to understand the multi-faceted user experience of vibrotactile feedback delivered through the Wear+Touch techniques. In the first experiment, we reveal a favorable user experience of vibrations delivered on the index finger, wrist, and forearm, in this order, when the touchscreen lacks haptics capabilities. In the second experiment, we reveal benefits of reinforcing and expanding on-screen vibrations with vibrotactile feedback on the index finger, wrist, and arm, respectively. We use our findings to suggest future work opportunities for combined vibrotactile feedback involving both touchscreens and wearable devices.
NETL
NSTL
Taylor & Francis