There are many products, tools, and technologies available that could provide support for older adults. However, their success requires that they are designed with older adults in mind by being aware of, and adhering to, design principles that recognize the needs, abilities, and preferences of diverse groups of older adults. Achieving good design is a process facilitated by seeing principles and guidelines in action. Design success requires understanding how to use the methods and tools available to evaluate initial ideas and prototypes. The goal of this book is to provide illustrative "case studies" of designing for older adults based on real design challenges faced by the researchers of the Center for Research and Education on Aging and Technology Enhancement (CREATE) over the past two decades. These case studies exemplify the use of human factors tools and user-centered design principles to understand the needs of older adults, identify where existing designs failed older users, and examine the effectiveness of design changes to better accommodate the abilities and preferences of the large and growing aging population.