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Security

What Are Passkeys and Should You Use Them?

A passkey lets you sign in with your fingerprint, face, or device PIN instead of typing a password. There is nothing to remember, nothing to reuse, and nothing a fake login page can steal.

Last updated October 23, 2026 · By Harbor Privacy

What a Passkey Is

A passkey is a pair of cryptographic keys. The private key stays on your device. The website stores only the matching public key. To sign in, your device proves it holds the private key after you unlock it with a fingerprint, face scan, or PIN. The private key is never sent to the site.

Passkeys are built on the FIDO2 and WebAuthn standards, so they work across browsers, phones, and computers from different vendors.

Why They Are Safer Than Passwords

  • Phishing resistant. A passkey is tied to the real website address. A look-alike page cannot use it.
  • Nothing to leak. A breach of the site exposes only public keys, which are useless to an attacker.
  • No reuse. Every site gets its own key pair automatically.
  • No codes to intercept. There is no text message or email code to steal.

Where They Fall Short

  • Support is uneven. Many large services offer passkeys, but plenty of sites still require a password.
  • Recovery matters. If you lose every device that holds a passkey and have no sync or recovery method, you can be locked out.
  • Ecosystem lock-in. Passkeys sync through your platform or password manager, and moving them between ecosystems is still clumsy.
  • Shared devices. Anyone who can unlock your phone or computer can use the passkeys on it.

How to Start Using Passkeys

01
Pick where they are storediCloud Keychain, Google Password Manager, or a password manager that supports passkeys.
02
Turn on a strong device lockA long PIN or passcode protects every passkey on the device.
03
Add a passkey to your important accountsStart with email, your Apple or Google account, and your bank if offered, in each account's security settings.
04
Keep a recovery pathSave backup codes and keep the old password until you are confident in the setup.

Related Guides

Passkeys work alongside good habits. See passwords and two-factor authentication, compare the main two-factor methods, and read how SIM swaps defeat text message codes.

Common Questions

Are passkeys better than passwords?
For most people, yes. They resist phishing and cannot be reused or leaked from a website breach.
What if I lose my phone?
If your passkeys sync through iCloud Keychain, Google, or a password manager, you can restore them on a new device. Set up recovery before you need it.
Do passkeys work without internet?
Signing in with a passkey on the same device works offline for local use, but signing in to a website still needs a connection.
Can I use a passkey and a password on the same account?
Often yes. Many sites keep the password as a fallback until you remove it.
Is a passkey the same as two-factor authentication?
A passkey replaces the password and already involves something you have plus a biometric or PIN, so many sites treat it as a strong sign-in on its own.
CHECK WHAT IS ALREADY EXPOSED

Passkeys protect future sign-ins. To see whether your email has already appeared in a breach, read how to check.

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