This book covers different aspects of assistive technologies. It sets up the plan for clarifying the definition and the precise role of assistive technologies in other disabilities and functional impairments. It expands the scope of assistive technologies from disabilities to functional impairments caused due to old age, various injuries, chronic diseases, neurodevelopmental disorders, and mental health conditions. Its comprehensive literature review describes current and emerging devices and presents evidence-based guidelines for matching promising technologies to individuals. Program outcomes are assessed, as are their potential impact on the future of the field. It also covers social, educational, training, manufacturing, and policy-making aspects of assistive technologies. It also describes assistive technologies based on the 5Ps, i.e., people, policy, products, provision, and personnel. It also elaborates on the assistive technologies on the aspects of awareness, availability, accessibility, affordability, acceptability, adaptability, quality, and use. It is a valuable read for therapists, medical professionals, trainees, students of allied health systems, public health specialists, policymakers, and assistive technology manufacturers.