Biometrics and handwriting recognition are which type of factors of authentication?

Biometrics and handwriting recognition fall under the category of "something you are/do" because they rely on unique physical characteristics or behavioral traits to verify an individual's identity. Biometrics specifically includes fingerprints, facial recognition, iris scans, and voice recognition, all of which are based on inherent physical attributes unique to a person. Handwriting recognition, while somewhat behavioral, also relies on the distinctive style of an individual's handwriting, which is unique to them.

This method of authentication is often considered more secure than traditional passwords or tokens, as it is difficult to replicate or steal someone's biological traits or their particular way of writing. By using these factors, systems can leverage the unique qualities of an individual to grant access, making it a valuable form of authentication in modern security practices.