The aim of this research is to design, develop, evaluate, and manufacture an assistive/adaptive computer peripheral to facilitate interaction and navigation within Virtual Learning Environments and related learning content for people with physical and learning disabilities. The function of the device will be software specific, but the most common primary functions are those of selection, navigation, and input. Emphasis is placed upon user involvement in all project stages and a user sensitive inclusive design methodology is adopted to facilitate their participative design. A prototype design is described, being the most favored conceptual design chosen from a range of possible designs by a multivariate team of experts. This process, along with other design experiments and exercises, illustrates the user-sensitive, inclusive design methodology in action and the importance of including people with disabilities in these processes.