FIDO2

FIDO2 is a password-less authentication standard developed by the FIDO Alliance and the World Wide Web Consortium (W3C). It combines the WebAuthn API and the Client to Authenticator Protocol (CTAP) to enable strong, phishing-resistant, public key-based authentication for web and mobile applications. In modern CIAM and IAM systems, FIDO2 is a core enabler of secure, frictionless, and scalable password-less login and multi-factor authentication (MFA).

Why it matters:

Passwords are a major source of breaches, credential stuffing, and user friction. FIDO2 eliminates the need for shared secrets by leveraging device-bound cryptographic keys, reducing attack surfaces and operational costs tied to password resets. For regulated industries such as banking, fintech, and gaming, FIDO2 helps achieve compliance with standards like PSD2 SCA and MAS TRM while delivering seamless, customer-first access experiences. Combined with Zero Trust architectures and Adaptive Security, it forms a foundation for modern identity ecosystems.

How it works:

• Public Key Cryptography: During registration, a device-bound key pair is generated. The private key never leaves the device, while the public key is stored on the server.

• WebAuthn API: Applications use the WebAuthn standard to challenge the device, verifying the user through biometrics, PIN, or hardware authenticators (e.g., YubiKeys, platform authenticators).

• Client to Authenticator Protocol (CTAP): CTAP allows external security keys and authenticators to interface with devices for multi-factor or password-less login.

• IAM Integration: FIDO2 plugs into IAM Journeys for strong authentication, step-up verification during high-risk transactions, and password-less workforce access. It is supported in platforms like Ping Identity, Keycloak, and Entra ID.