Book excerpt: This book focuses on the design of displays and user interfaces for the older user. Aging is related to complex mental, physical, and social changes. While conventional wisdom says getting older leads to a decline, the reality is that some capabilities decline with age while others remain stable or increase. This book distills decades of aging research into practical advice on the design of displays. Technology has changed dramatically since the publication of the first edition. This new edition covers cutting-edge technology design such as ubiquitous touchscreens, smart speakers, and augmented reality interfaces, among others.