Passkey

A passkey is a sign-in method that replaces a password with a cryptographic key stored on your device and unlocked with your fingerprint, face or screen lock.

What it means for you

The FIDO Alliance describes passkeys as phishing-resistant, because they only work on the real website. Many sites let you keep your password as a backup, so you can adopt passkeys gradually; see our 2FA guide.

Guides on this topic

• 2FA, Passkeys and Security Keys for Your Home

  Turn on two-factor sign-in with a free authenticator app, add passkeys where offered, and decide whether a security key is worth it.

• Password Managers for a Household: Free Options First

  Start with the free built-in managers from Apple and Google, then compare free Bitwarden and Proton Pass plans, plus breach alerts and a weekend plan.

• How to Secure Your Security Camera

  Seven steps from two-factor sign-in and updates to IoT networks and safe sharing.

Related terms

• Two-factor authentication
• Security key
• Password manager
• Authenticator app

← All glossary terms · Search all guides for “Passkey”

Definitions are short and general. For model-specific details, check your device maker’s own documentation.