Abstract: Systems, methods, and non-transitory computer-readable media for biometric authentication of people are provided. The system may be a stand-alone unit for biometric authentication, or may be integrated into consumer or household devices, point-of-sale devices, or security systems for controlling access to a facility or area. The system may include a plurality of supplemental input devices, such as a keypad, keyboard, or user-supplied device, to augment the biometric authentication. When the system is used by a user, it carries out at least one method of authenticating the identity of the user by matching biometric information acquired from the user to a database of authorized users. Such a database may be local to the device used to acquire the user's biometric information, or may be remote, or the authentication information on authorized users may be stored both locally and remotely.