Published at: EuroXR 2021: Virtual Reality and Mixed Reality, pp 51-64
Abstract: The emergence of Augmented Reality (AR) has brought new challenges to the design of text entry interfaces. When wearing a pair of head-mounted AR glasses, a user’s visual focus could be anywhere 360 ∘∘C around her. For example, a technician is looking up at an airplane engine, meanwhile sharing her view with remote technicians through the sensors on the AR glasses. In such a scenario, the technician has to keep her gaze at the parts and look away from input devices such as a wireless keyboard or a touchscreen. Thus, she will have limited ability to input text for tasks like taking notes about a certain engine part. In this work, we designed and developed two innovative text entry interfaces: Continuous-touch T9 (CTT9) and Continuous-touch Dual Ring (CTDR). Our methods employ a smartphone touchscreen and a projected text entry layout in AR space to help the users input texts without looking at the smartphone. Our user studies suggest the effectiveness of CTT9 and CTDR and provide clues on how to optimize them. Based on the user study results, we provide insights about applying the proposed Continuous-touch (CT) paradigms to text entry for AR glasses.
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