This book explores the development and commercialization of advanced biosensing devices, highlighting how they are designed to improve healthcare diagnostics. It covers key topics such as the miniaturization of devices, the use of nanomaterials, wearable health monitoring systems, and the role of AI in enhancing sensor technologies. The chapters also discuss point-of-care diagnostics, smartphone-based biosensors, and the future of next-generation devices. This book is an excellent resource for students, researchers, and professionals in biomedical engineering, biotechnology, and healthcare technology.