What does Type III Authentication refer to?

Type III Authentication refers to biometrics, which encompasses "something you are." This authentication method is based on unique biological characteristics of an individual, such as fingerprints, facial recognition, iris scans, or voice recognition. These traits are inherently tied to a person, making them difficult to replicate or steal, thus providing a high level of assurance regarding the identity of the individual.

In contrast, the other types of authentication are defined as follows: Type I Authentication usually refers to something you know, such as passwords or PINs; Type II Authentication involves something you have, like security tokens or smart cards; and Type IV Authentication refers to something you do, which includes behavioral biometrics, such as typing patterns or gait analysis. Type III stands apart due to its focus on physical traits unique to an individual.