FIDO2
N/A
FIDO2
FIDO2 · N/A · FIDO2 · FY-doh-too · FIDO2 passwordless · CTAP WebAuthn · Cryptography · auth · standards · keysCryptographyFIDO2 passwordless CTAP WebAuthn/FY-doh-too/
Also known as: FIDO2 passwordless, CTAP WebAuthn
Last updated August 9, 2026
Definition
FIDO2 is the open standard pairing WebAuthn and CTAP so devices and browsers can do phishing-resistant passwordless login.
Real-World Example
A hardware security key that works across sites supporting FIDO2/WebAuthn.
References
Related terms
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