TSV
Authentication Methods - TSV
Authentication methods are core security technologies used to verify that users are who they claim to be in digital systems. Various techniques exist including password-based authentication, multi-factor authentication (MFA), biometric authentication, single sign-on (SSO), certificate-based authentication, token-based authentication, and passwordless authentication. In recent years, passkey authentication based on the phishing-resistant FIDO2/WebAuthn standard has rapidly gained adoption, with major tech companies fully committing to passwordless transitions by 2025. The choice of authentication method is based on balancing security level, usability, and implementation costs.
authentication
security
MFA
biometrics
SSO
passwordless
FIDO2
WebAuthn
passkey
code slug name description factorType
01 password-based Password-Based Authentication The most common authentication method using something the user knows (password). Knowledge (Something you know)
02 multi-factor-authentication Multi-Factor Authentication (MFA) An authentication method that enhances security by combining two or more different authentication factors. Combined (Knowledge, Possession, Inherence)
03 two-factor-authentication Two-Factor Authentication (2FA) A specific type of MFA that uses exactly two authentication factors. Combined (2 factors)
04 biometric-authentication Biometric Authentication Authentication using physical characteristics such as fingerprints, face, or iris patterns. Inherence (Something you are)
05 single-sign-on Single Sign-On (SSO) Authentication allowing access to multiple systems with a single login. Protocol/Mechanism
06 certificate-based-authentication Certificate-Based Authentication High-security authentication using digital certificates and cryptographic techniques. Possession (Something you have)
07 token-based-authentication Token-Based Authentication Authentication using physical or digital tokens to grant access. Possession (Something you have)
08 passwordless-authentication Passwordless Authentication Authentication without passwords using more secure and user-friendly methods. Combined (Possession, Inherence)
09 adaptive-authentication Adaptive Authentication Authentication that dynamically adjusts requirements based on risk factors. Risk-based
10 hardware-security-keys Hardware Security Keys The most secure authentication method currently available using physical devices. Possession (Something you have)
11 oauth-openid-connect OAuth/OpenID Connect Authentication and authorization protocols using third-party identity providers. Protocol