Biometrics, the science of recognizing individuals through physical and behavioral traits such as fingerprints, face, iris, voice, and gait, is increasingly important for securing access to devices, facilities, and services. Applications range from smartphone authentication and border security to national identification systems and financial account protection. As biometrics replaces traditional passwords and becomes the preferred authentication approach in everyday scenarios, the demand for scientists and engineers with biometric computing skills continues to grow rapidly. Despite this demand, undergraduate students have limited opportunities to gain hands-on research experience in this critical area. This Research Experiences for Undergraduates (REU) Site, hosted by the Department of Computer Science and Engineering at the University at Buffalo (UB), will address that gap by providing intensive summer research training in biometrics and authentication to undergraduate students recruited from across the nation. Through mentored research projects, hands-on workshops, seminars, field trips, professional development activities, and project demonstrations, participants will build practical research skills while exploring technologies with direct applications in national security, healthcare, and consumer electronics. The program will recruit students nationwide through broad outreach open to all eligible participants, with emphasis on reaching students from institutions with lim