"Biometrics and Kansei Engineering" is a groundbreaking textbook that combines the principles and applications of both disciplines. It highlights the need for new technologies in the field of biometrics that are based on human emotions and can predict their intentions. The book addresses human behavior, including gait, speech, and emotional expression, and connects this with the concepts of Kansei engineering, which focus on the interactions between users, products, and the psychology of products. Through the integration of examples and case studies, the close relationship between these two areas is illustrated. The book is aimed at professionals working in these related fields, as well as advanced students and researchers in computer science and engineering, who can use it as a reference or supplementary reading.