Attachments-free Point and Click Device for the Disabled

描述（由申请人提供）：在这项工作的第一阶段，Vortant Technologies为非侵入性计算机输入创建了一种新的点击式（VPAC）设备。这种新设备可以跟踪用户头部的位置和方向，但不需要在用户身上附加设备、标记或点。由于采用了一种创新的基于光的距离测量技术，该设备具有独特的低成本“无附件”特性。

DESCRIPTION (provided by applicant): In Phase I of this work, Vortant Technologies created a new point-and-click (VPAC) device for non-invasive computer input. The new device tracks the position and orientation of the user's head, but requires no attachment of devices, markers, or dots to the user. The unique, low-cost "attachments-free" features of the device are possible due to an innovative light-based distance measuring technology. The performance of the Phase I VPAC device significantly exceeded the proposed success criteria. During user evaluation, the new VPAC device performed well, and could be used by nearly all beginners and advanced computer users for basic computer tasks. User feedback questionnaires and interviews showed that users strongly prefer the attachments-free features of the new device, which significantly enhances their level of independence in computer access. The overall aim of the proposed Phase II project is to expand on this foundation to create a VPAC prototype with the look, feel, and functionality of a real-world product. Ergonomic and functional improvements will be made to the device, and a set of VPAC prototypes will be evaluated for usability, including a learning-curve study and a one-month trial.