How to use passkeys to simplify logins and cut the risk of account takeovers

Passwords have been a problem since the early days of the internet. They are hard to remember, often reused and regularly stolen in data breaches. A newer login method called passkeys aims to reduce that risk while also making sign-ins quicker.

Passkeys are gradually appearing on major services and devices. Understanding what they are and how to use them helps you move away from weak or recycled passwords without needing deep technical knowledge.

What a passkey is and how it works

A passkey is a modern login credential that replaces a traditional password for a specific account. Instead of typing a secret phrase, you confirm it is you using something like a fingerprint, face scan or device PIN that never leaves your device.

Behind the scenes, a passkey uses public key cryptography. Your device generates a key pair: a public key that is stored with the online service, and a private key that stays on your device. When you sign in, the service sends a challenge that only your private key can answer, so even if criminals copy the public key, they cannot log in.

Why passkeys reduce common risks

Passkeys are designed to resist several everyday threats that target passwords. There is nothing to guess, reuse or leak in the same way as a traditional password, which removes entire classes of attacks.

Phishing becomes harder because your device will not create a valid response for a fake website that does not match the original domain. Even if you tap a bad link, a passkey stored for “example.com” will not work on “examp1e.com,” so the attacker gains nothing useful.

Where you can already use passkeys

Support is expanding across popular platforms. Many major password managers now store and sync passkeys. Large consumer services are gradually adding the option to create them instead of or in addition to passwords.

Modern browsers can work with passkeys through integrated features or with the help of a password manager. On recent versions of Android, iOS, macOS and Windows, you can often create and use passkeys directly with the system’s own credential storage.

How to start using a passkey on an account

The basic setup is similar across services. Go to the security or sign-in section of your account settings, then look for options like “Passkeys,” “Passwordless sign-in” or “Security keys.”

When you choose to create a passkey, your browser or device will guide you through confirming your identity using a fingerprint, face or PIN. After that, the passkey will usually be stored on your device and, if you allow it, synced through your ecosystem or password manager to other devices you own.

What sign-in with a passkey feels like

After setup, the experience is typically quicker than entering a password. You visit the site or app, choose to sign in, and your device offers the relevant passkey if it recognises the account.

To continue, you approve with your usual device unlock method. For example, you might touch a fingerprint sensor or look at the camera. You do not need to remember a complex phrase or type it on a small screen.

Handling multiple devices and backups

One concern is how to avoid losing access if a device is damaged or lost. Many systems address this by syncing passkeys across your signed-in devices using encrypted cloud storage from the platform or your password manager.

For extra resilience, it is wise to keep at least one additional way to log in, such as a second passkey on another device, a hardware security key or well stored recovery codes. Review your account recovery options and remove any that seem weak or outdated.

Security and privacy considerations

Using passkeys still relies on securing your physical devices. An unlocked laptop or phone is a valuable target, since a criminal could approve sign-ins in your place. Strong device PINs, biometric locks and full disk encryption remain important.

It also helps to keep operating systems, browsers and password managers updated. Updates often fix flaws that could undermine passkey storage or browser integration, so turning on automatic updates is a practical step.

When you might want to wait or go slowly

Although passkeys are promising, support is not yet universal. Some accounts only offer partial features, and shared access situations can still be easier with traditional passwords, at least for now.

A gradual approach can work well. Start with a few important accounts that already support passkeys, learn how recovery works, then extend usage as you become more comfortable and as support improves on the services you rely on.

Practical steps to get started this week

You can begin by checking whether your main email, cloud storage or banking service already offers passkeys. If it does, create one on a trusted device that you keep with you and that uses strong device security.

Over time, replace weak or reused passwords on services that support passkeys and use a reliable password manager to handle the remaining accounts. For serious issues, such as suspected account takeover, consult your provider’s support team or a qualified security professional for tailored help.