The technology used for authentication via biometric features is called biometric authentication. This technology leverages unique biological characteristics, such as fingerprints, facial recognition, iris scans, or voice recognition, to verify an individual's identity. Biometric authentication provides a higher level of security compared to traditional password or PIN-based methods, as it links access to something inherent and difficult to replicate. With the increasing need for secure access to devices and online services, biometric technologies are becoming prevalent in various applications, including smartphones and security systems.