Mapping input technology to ability

Accessibility is a critical aspect of health care system design, particularly E-health systems. Ability to access services may change as ones abilities vary, by situation as in the use of a cell phone while driving, by condition, as during an illness or as a result of an accident and in the process of aging. As the European population becomes increasingly skewed towards elders, the ability to communicate with and via computers will become more and more important. Communication consists of two processes: presenting information in an accessible manner and receiving input from the user in a mode that fits the users skills and needs. This chapter describes the design process in providing an alternative to a keyboard for input by persons with motoric disabilities.