In a world increasingly defined by artificial intelligence (AI), digital identity, and algorithmic trust, our sense of self is no longer confined to the physical realm; it extends, adapts, and evolves across data-driven platforms. This book presents an interdisciplinary examination of how intelligent systems are transforming the foundations of identity, privacy, and autonomy in the digital age. Bridging perspectives from psychology, education, information security, and governance, this volume examines the emerging intersections between human behavior, ethical design, and advanced technologies, including EdgeAI, federated learning, and self-sovereign identity. Through accessible analysis and forward-looking discussion, it reveals how online identities are constructed, authenticated, and safeguarded in an era of rapid technological transformation. The book’s strength lies in its ability to connect technical architecture with human experience, showing how trust, transparency, and digital resilience must be intentionally engineered into identity ecosystems. Readers will gain an integrated understanding of the psychological, social, and regulatory dimensions that underpin secure and ethical digital participation. Comprehensive yet approachable, this volume serves as a valuable reference for researchers, educators, technologists, and policymakers seeking to navigate the challenges of identity management in an AI-driven world. By combining conceptual clarity with practical insight, it invites reflection on a crucial question for the future: how can we build identity systems that recognize not only who we are, but what we value?