Passwordless Authentication.
Any authentication scheme that verifies the user without asking for a password — using a passkey, hardware security key, biometric, magic link, or one-time code instead.
Passwordless is not the same as passkeys. Passkeys are one form of passwordless authentication — the strongest one — but the category also includes magic links, email OTP, and SMS OTP, which are passwordless and phishing-vulnerable. When a vendor says "passwordless," ask which mechanism.
The frequent objection — "but our users will lose access if their device dies" — is solved at two layers in 2026: passkey sync via the platform cloud (iCloud Keychain, Google Password Manager, Microsoft account) makes the credential portable across the user's devices; account recovery via a second registered authenticator or a verified-email fallback handles total-loss scenarios. The recovery design is the part that needs deliberate attention, not the credential mechanism itself.
Common questions
What is passwordless authentication?
Is passwordless the same as passkeys?
Is passwordless authentication more secure than MFA?
Related terms
In the guides
FIDO2 Explained: CTAP2, WebAuthn, and Where Security Keys Still Win
FIDO2 is the umbrella for WebAuthn (browser API) plus CTAP2 (the authenticator protocol). How the pieces fit, when to require security keys, and how passkeys changed the deployment model.
Magic Links vs OTP: Picking the Passwordless Fallback
Magic links and OTP (email, SMS) are the two common passwordless fallbacks. A practical comparison: deliverability, security, UX, and when each is the right choice.
Passkeys Explained: How Synced Credentials Replace Passwords
Passkeys are the user-facing brand for synced WebAuthn credentials. A practical explanation of how they work, sync, recovery, and the deployment patterns that make adoption real.
Passwordless Authentication: A 2026 Practitioner's Guide
How passkeys, magic links, and biometrics replace passwords in CIAM, with implementation patterns, adoption data, and vendor support.