Passkeys: What They Are and Why They Are Replacing Passwords

Passkeys: A Simpler Alternative to Passwords

Quick answer: Passkeys allow you to sign in using your device's unlock method, such as a fingerprint, face recognition, or local passcode. Instead of sending a password, they use cryptography tied to the specific site. This makes them resistant to phishing, although you should still protect your devices, set up recovery options, and check where they are synced.

The passkeys They are appearing more and more frequently when logging in to digital services. In Spanish, they are often called “claves de acceso.” Their purpose is to reduce reliance on passwords that are forgotten, reused, or end up being exposed in data breaches.

A passkey isn't just a saved password. It works using a pair of cryptographic keys: a public key is registered with the service, and a private key remains secure on your device or in your password manager. The service verifies that the two keys match without ever receiving the private key.

How to Use a Passkey in Everyday Life

When a site supports passkeys, you can create one in the security settings. Afterward, to sign in, your device will prompt you to use the same method you use to unlock it: fingerprint, facial recognition, pattern, or passcode.

That local verification does not send your fingerprint or face to the site. The biometric mechanism only authorizes the device to use the private key. Depending on the service, it is also possible to use a nearby phone or a compatible physical key.

Why You Can Better Resist Phishing

Phishing attempts to lure you to a fake page so you'll enter your password. A passkey is linked to the domain where it was created, so it shouldn't work on a fake site with a different address. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) identifies FIDO and WebAuthn as widely available and phishing-resistant mechanisms.

This does not eliminate all fraud. A person can still be tricked into authorizing a payment, providing information, or recovering an account through a fraudulent channel. The passkey protects the login process, not every subsequent decision.

Differences Compared to Other Methods

Where are the access keys stored?

Depending on your choice, a passkey can remain on a device, be synced via an account, or be stored in a compatible manager. Syncing makes it easier to use multiple devices, but it’s important to protect the account that manages those credentials.

Before creating a password, check to see if you can export it, share it securely, or recover it from another device. Options vary and may change over time.

What happens if you lose your phone

The answer depends on where the passkey was stored. If it was synced, you can usually recover it by securely logging into your account from another device. If it was only stored on a single device or physical key, you'll need an alternative copy or to use the service's recovery process.

That's why it's a good idea to set up more than one security method before relying entirely on a passkey. Store your recovery codes off your main device and keep your contact information up to date.

How to Get Started Without Overcomplicating Things

1. First, enable passkeys on an account that has a robust recovery process.
2. Protect your phone and computer with local locking and updates.
3. Check where the key is stored and synchronized.
4. Set up a second device, a physical key, or recovery codes.
5. Don't rule out other methods until you've verified that you can log in from your usual devices.
6. If you receive an unexpected request, cancel it and activate the service using your known address.

Will all passwords disappear?

The transition will be gradual because not all services, devices, and recovery processes support the same system. For a while, passkeys, passwords, and various forms of two-factor authentication will coexist.

Passwords significantly improve security, but they are no substitute for being cautious about links, devices, and requests for money or information. You can check the CISA's official guidance on phishing-resistant authentication and follow our category of Technology for more practical explanations.