This book focuses on the design of displays, or user interfaces for the older user. Aging leads to a complex set of changes both mentally and physically. While conventional wisdom says getting older leads to a decline across a broad set of skills and abilities, the reality is that some capabilities decline with age, others are stable or increase. This book distills decades of aging research, relevant to the design of displays. Since the publication of the first edition, the display, or interface technology has changed dramatically. The new edition covers cutting-edge technology design such as ubiquitous touchscreens, smart speaker, and audio interfaces, among others.