Authentication methods

Authentication methods are techniques used to verify a person's identity before granting access to a system, service, or information. Common methods include passwords (secret phrases known only to the user), biometric factors (like fingerprints or facial recognition), and security tokens (devices or apps generating codes). Multi-factor authentication combines two or more methods for added security, such as requiring both a password and a code sent to your phone. These methods help protect sensitive data from unauthorized access, ensuring that only legitimate users can access accounts or systems.