Which aspect of identity verification uses biological characteristics?

Biometrics refers specifically to the use of biological characteristics for identity verification. This can include various unique physical traits such as fingerprints, facial recognition, iris patterns, or voice recognition. Biometrics are increasingly utilized in security systems and devices because these characteristics are typically unique to individuals and harder to replicate or forge than traditional methods of identification.

In contrast, credentials usually refer to traditional forms of identification like government-issued IDs or passwords, tokens are physical objects used for authentication (like key fobs or cards), and secure passwords are combinations of characters used to protect access to systems and accounts. While all these options facilitate identity verification, they do not rely on biological traits in the way that biometrics does.