Digital signal processors (DSPs), which are specially designed single-chip digital microcomputers that process electrical signals generated by electronic sensors (e.g., cameras, fingerprint sensors, microphones, etc.), will help to revolutionize this world of biometrics. The following paper addresses how to design a fingerprint authentication device that can be used in server-based as well as stand-alone or portable applications. It covers how to design an embedded DSP-based fingerprint biometric system that is suitable for multiple applications with focus on increasing system accuracy, conserving system power. In addition, I will provide some information on fingerprint sensor selection to meet cost and user demands.