TOTP is much better than no 2FA and stops most attacks. Its weakness is phishing — a sophisticated attacker can relay TOTP codes in real-time. For most users and threat models, TOTP is sufficient.

WebAuthn is a W3C standard for passwordless and 2FA authentication using public-key cryptography. It works with hardware keys (YubiKey), platform biometrics (Touch ID, Windows Hello), and passkeys. It is the most secure consumer auth available.

Should I stop offering TOTP?

No. Keep TOTP as a fallback. Not all users have WebAuthn-capable devices or hardware keys. Encourage WebAuthn as the primary 2FA method, but TOTP is a necessary fallback for accessibility.

Last updated: April 12, 2026

TOTP vs WebAuthn — Which Two-Factor Authentication in 2026?

Quick Answer

TOTP generates time-based 6-digit codes (Google Authenticator, Authy). WebAuthn uses hardware keys (YubiKey) or platform authenticators (Touch ID, Windows Hello). WebAuthn is phishing-resistant; TOTP is more widely supported and simpler to deploy.

TOTP vs WebAuthn — Side by Side

Feature	TOTP	WebAuthn
Security Level	Good — prevents password-only attacks	Excellent — phishing-resistant
Phishing Resistance	No — codes can be phished in real-time	Yes — cryptographically bound to domain
User Experience	Open app, type 6-digit code	Touch key or use biometric (1 step)
Hardware Required	Phone with authenticator app	Hardware key or device with biometrics
Setup Complexity	Simple — scan QR code	Moderate — register authenticator
Backup	Backup codes or export TOTP secrets	Register multiple keys, backup codes
Cost	Free (phone app)	Free (biometric) or $25-50 (hardware key)

Verdict

Offer both. WebAuthn is the most secure 2FA option — phishing-resistant and better UX (one touch). TOTP is the fallback for users without WebAuthn-capable devices. Never rely on SMS 2FA as primary — it is vulnerable to SIM swapping.

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