Custodial deaths remain one of the most pressing human rights concerns of our time. Every incident not only represents the loss of a life but also erodes public trust in justice systems, sparking debates on accountability, transparency, and humane treatment. Traditional methods of monitoring-manual supervision, CCTV surveillance, and paper-based reporting-have proven inadequate in preventing violence, medical neglect, or self-harm within custodial facilities. The need for a transformative approach has never been greater.This book, Preventing Custodial Deaths: Harnessing AI, IoT, and Wearables for Custodial Protection, explores how technology can serve as a shield to safeguard human dignity, rather than as a tool of oppression. By leveraging Artificial Intelligence (AI) for predictive monitoring, Internet of Things (IoT) for real-time environmental and behavioral tracking, and wearables for continuous health supervision, custodial systems can evolve from reactive crisis management to proactive protection.Through case studies, practical frameworks, and real-world applications, this book demonstrates how integrated technologies can detect early warning signs of violence, prevent medical emergencies, and reduce the burden on human staff. It also addresses the ethical, legal, and social implications of deploying advanced surveillance and monitoring tools in sensitive environments, ensuring that the balance between security and dignity is maintained.The vision of this book is clear: custodial facilities should not be places of despair and vulnerability, but of safety, justice, and humane care. By combining cutting-edge innovation with strong governance and oversight, it is possible to significantly reduce custodial deaths and rebuild trust in institutions responsible for justice and protection.