What is biometric authentication used for?

Biometric authentication is designed specifically to verify an individual's identity through unique biological traits, such as fingerprints, facial recognition, iris patterns, or voice recognition. This method takes advantage of characteristics that are inherently tied to a person, making it a secure form of authentication because these traits are difficult to replicate or steal.

The use of biometric authentication enhances security measures across various applications because it provides a layer that is not only more convenient for users but also more difficult for unauthorized individuals to breach. In contrast, the other options do not align with the primary purpose of biometric authentication. For example, providing passwords involves traditional methods of user authentication rather than leveraging biological traits, and the creation of encryption keys and security policies pertains to different aspects of security management unrelated to personal identification.