People use touchless input when interacting with virtual or augmented reality. During those interactions, they may alternate between hands or use both hands simultaneously. How does handedness impact user performance in touchless input? We hypothesized that touchless inputs, owing to a lower demand for feedback control, will produce much less between-hands performance differences than traditional input devices like the mouse or stylus. In our experiments, participants performed pointing and dragging with freehand and device-based touchless inputs. Both types of touchless inputs produced significantly less degradation between hands than the mouse or stylus. Furthermore, structural equation models elucidated the relation between handedness, input type, and user performance. Our findings indicate that only input devices with relatively higher demand for feedback control produce significant between-hands performance differences.

人们在与虚拟现实或增强现实互动时会使用非接触式输入。在这些交互过程中，它们可能会在双手之间交替出现或同时使用两只手。上手性如何影响非接触式输入中的用户性能？我们假设，由于对反馈控制的需求较低，非接触式输入将产生比传统输入设备（如鼠标或手写笔）少的双手间性能差异。在我们的实验中，参与者使用徒手和基于设备的非接触式输入来进行指向和拖动。两种类型的非接触式输入所产生的手之间的降级均明显少于鼠标或手写笔。此外，结构方程模型阐明了惯用性，输入类型和用户性能之间的关系。