This book aims at disseminating information and knowledge in Gerontechnology, a topic that is still considered a specific area of interest for techno-experts (i.e. informatics, engineers, bio-engineers, bio-statistics, etc.) while there is a relatively low diffusion of technological expertise among clinicians and other health professionals who are involved in the care of older people. In many parts of the world, average life expectancy is rising consistently, and at the same time technology is developing at a dramatic pace. This means having completely new options for the diagnosis, treatment and follow-up of diseases and disabilities of older people but also a new challenge to improve the quality of life by promoting an active and healthy aging at population level. This book explores the technical developments that are beginning to change the management of diseases and disabilities of geriatric patients. These include advanced Information and Communication Technologies (ICT), i.e. the new online services in healthcare and electronic medical-health records, Assistive Technologies (AT), i.e. behavior and motility monitoring sensorial tools, smart homes tools and telemedicine tools as well as HumanComputer Interaction technologies (HCI), i.e. robots for supporting people with mobility or cognitive limitations, humanoid robots, exoskeletons and rehabilitation robots. The Work is divided into three main parts: 1) Technology in a world of aging people, 2) Clinical applications of technologies in older people, and 3) Older people and technologies interaction including privacy issues, acceptability of technologies by older people and education and training of healthcare professionals in gerontechnology. The book will be an invaluable tool for geriatricians and other health professionals who are involved in the care of older people.