Passwords are hard to remember, easy to reuse and simple for scammers to steal. Passkeys are designed to fix all three problems. Major platforms including Apple, Google and Microsoft now support them, and many popular websites let you switch today. This guide explains passkeys in plain English and shows you how to start using them safely.
Key takeaways
- Passkeys let you sign in with your fingerprint, face or device PIN.
- They only work on the genuine website, so they resist phishing.
- Websites store only a public key, which is useless to hackers.
- Sync passkeys through your Apple, Google or Microsoft account or a password manager.
- Start with your email, banking and cloud accounts.
What is a passkey?
A passkey is a digital credential stored on your device that replaces a password. When you sign in, you unlock it with the same method you use to unlock your phone or computer: your fingerprint, face or device PIN. There is nothing to type and nothing to remember.
Why passkeys are safer than passwords
- Phishing resistant: a passkey only works on the real website it was created for, so a fake login page cannot capture it.
- Nothing to leak: websites store only a public key, which is useless to hackers if the site is breached.
- No reuse: every passkey is unique, so one breached account cannot unlock another.
In short: passkeys combine the convenience of a fingerprint with security that is stronger than a password plus a text-message code.
How passkeys work behind the scenes
When you create a passkey, your device generates two linked keys. The private key never leaves your device or password manager. The public key is sent to the website. At sign-in, the website sends a challenge that only your private key can answer, and your fingerprint or PIN simply proves you are the person allowed to use it.
How to set up your first passkey
- Update your phone or computer and your browser to the latest version.
- Sign in to an important account, such as your main email, using your current password.
- Open the account’s security settings and look for “Passkeys” or “Sign in with a passkey”.
- Choose to create a passkey and confirm with your fingerprint, face or PIN.
- Sign out and sign back in to test that it works.
Avoid getting locked out
Most people never have a problem, but a little planning removes the risk entirely:
- Store passkeys in a synced manager, such as your Apple, Google or Microsoft account or a password manager that supports them.
- Keep at least two trusted devices signed in to that account.
- Save account recovery codes somewhere safe and offline.
- Do not delete your old password until you have used the passkey on every device you rely on.
Passkeys vs passwords vs two-factor codes
| Password | Password + 2FA | Passkey | |
|---|---|---|---|
| Easy to use | Hard to remember | Extra step | One tap or glance |
| Phishing resistant | No | Partly | Yes |
| Useless if leaked | No | Partly | Yes |
If a website does not support passkeys yet, use a strong unique password with two-factor authentication. The FIDO Alliance, which develops the passkey standard, keeps a growing list of supporting services.
Using passkeys across devices
Passkeys sync through your Apple, Google or Microsoft account, or through password managers that support them, so they work on your phone, tablet and computer. You can also sign in on a friend’s or shared computer by scanning a QR code with your phone, without saving anything on that computer. Phishing remains the main threat passkeys defend against, so it is still worth learning how to spot phishing emails.
Should you switch now?
Yes, start with your most valuable accounts: email, banking, social media and cloud storage. Keep two-factor authentication turned on wherever passkeys are not yet available, and use a password manager for the rest.
For more step-by-step security advice, visit the Cybersecurity hub on Technicalinterest.Com, or browse our How-To Guides for device setup help.
Common passkey questions from readers
Readers often ask whether passkeys share their fingerprint with websites. They do not: your fingerprint or face only unlocks the passkey on your own device, and the website never receives your biometric data. Another common worry is shared family devices. In that case, give each person their own account on the device so passkeys stay separate, and keep a backup sign-in method for important accounts.
Frequently asked questions
Do passkeys work on all websites?
Not yet. Support is growing quickly among major services. Where passkeys are unavailable, use a password manager and two-factor authentication.
What happens if I lose my phone with my passkeys?
If your passkeys are synced to your Apple, Google or Microsoft account or a password manager, they are restored when you sign in on a new device.
Can someone steal my passkey?
The private key never leaves your device or password manager and cannot be typed into a fake website, which makes passkeys very hard to steal.
