Accessibility
Accessibility is the design of products, devices, services, or environments for people with disabilities (Wikipedia). Accessibility is not to be confused with usability, which is the extent to which a product (such as a device, service, or environment) can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use. (Related: Design and Usability of Websites for Special User Groups, Design and Usability of Consumer Health Tech and Home Monitoring Devices, Human Factors and Usability Case Studies, Usability Evaluation Case Studies, Usability and user perceptions of mHealth).