Biometric systems primarily enhance security by using:

Biometric systems enhance security by utilizing unique physical characteristics of individuals, such as fingerprints, facial recognition, iris patterns, or voice patterns. These characteristics are inherently tied to a person and make it significantly more difficult to impersonate or replicate one’s identity. Unlike passwords or access cards, which can be lost, stolen, or shared, biometrics relies on something that is physically part of the individual, thereby increasing the accuracy and reliability of identity verification. This unique association raises the security level since it necessitates the presence of the individual at the point of access, thus minimizing the risk of unauthorized access.

Tangible access cards, traditional usernames, and general security protocols can be more easily compromised; for instance, cards can be lost or stolen, usernames can be shared or hacked, and security protocols may not provide the same level of individual verification as biometric measures.