> ## Documentation Index
> Fetch the complete documentation index at: https://help.the-meridian.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Passkey

A passkey signs you in with your device's own authentication (Touch ID, Face ID, Windows Hello, or a hardware security key) instead of a password. Passkeys are phishing-resistant, so a registered passkey also counts as a second factor for [2FA](/2-fa).

## Register a passkey

From your account security settings, add a passkey. Your browser prompts you to create one with the device or key you choose. You can register more than one, for example your laptop and a hardware key as backup. Each passkey is listed with when it was added, and you can remove any of them.

## Sign in with a passkey

On the sign-in screen, choose to sign in with a passkey and confirm on your device. No password or authenticator code is needed.

## Passkeys and 2FA enforcement

Because a passkey satisfies the two-factor requirement on its own, registering one is enough to unlock an organization that [enforces 2FA](/2-fa#organization-enforcement). While your organization enforces 2FA, Meridian won't let you remove your last remaining factor. Delete a passkey only if you have another passkey or an authenticator app in place.


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