# Page Not Found

The URL `user-guide/oten-account-management/authentication/multi-factor-authentication-optional/mfa-passkeys-fido2-webauthn` does not exist.

You might be looking for one of these pages:
- [MFA-Passkeys (FIDO2 / WebAuthn)](https://oten.gitbook.io/identity-support/user-guide/personal-account/account-security/multi-factor-authentication-optional/mfa-passkeys-fido2-webauthn.md)
- [MFA-Authenticator apps (TOTP)](https://oten.gitbook.io/identity-support/user-guide/personal-account/account-security/multi-factor-authentication-optional/mfa-authenticator-apps-totp.md)
- [MFA-Email verification codes](https://oten.gitbook.io/identity-support/user-guide/personal-account/account-security/multi-factor-authentication-optional/mfa-email-verification-codes.md)
- [Multi-Factor Authentication (optional)](https://oten.gitbook.io/identity-support/user-guide/personal-account/account-security/multi-factor-authentication-optional.md)
- [Google OIDC: Sign in to Google via Oten](https://oten.gitbook.io/identity-support/user-guide/personal-account/authentication/google-oidc-sign-in-to-google-via-oten.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://oten.gitbook.io/identity-support/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://oten.gitbook.io/identity-support/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/identity-support/user-guide/personal-account/account-security/multi-factor-authentication-optional/mfa-passkeys-fido2-webauthn.md`)
- Use `Accept: text/markdown` header for content negotiation