This document discusses biometrics as a method for identifying individuals that is secure, convenient, and unique. It outlines the types of biometrics like physiological (face, fingerprint, iris) and behavioral (signature, voice). Biometrics are applied for access control, immigration, security systems, and more. The advantages are that biometrics are unique and reduce the need to carry IDs. However, disadvantages include false acceptance and rejection rates, potential damage or changes to biometrics over time, and privacy/ethical concerns around biometric data storage and use. Some case studies show biometrics technologies have already been hacked. The document questions if biometrics are a boon for security or another technology mistake.