You may have started seeing the option to “sign in with a passkey.” Passkeys are being rolled out by Google, Apple, Microsoft and many others as a replacement for passwords — and they’re both easier and safer. Here’s what they are, in plain English.
Note: Informational guide to a fast-evolving technology.
What a passkey is
A passkey lets you sign in to an account using the same thing you unlock your phone or laptop with — your fingerprint, face, or device PIN — instead of typing a password.
Behind the scenes, your device stores a secret key that never leaves it, and proves your identity to the website without any password being sent or stored. There’s nothing to type, remember, or leak.
Why passkeys are safer than passwords
- Nothing to steal in a breach. Websites don’t store a password, so a hack can’t leak one. Compare that with checking if your password has leaked.
- Phishing-resistant. A passkey only works on the real site, so a fake login page can’t trick you — a big win against phishing.
- No reuse problem. Each passkey is unique to one site automatically.
In short, passkeys remove the two biggest weaknesses of passwords: leaks and phishing.
How to start using passkeys
- When an account offers “Create a passkey” (often in Security settings), accept it.
- Confirm with your fingerprint, face, or device PIN.
- Next time, just sign in the same way — no password.
Your passkeys can sync securely across your devices through your Google, Apple or Microsoft account, or be stored in many password managers.
Do passwords still matter?
Yes — for now. Passkeys are spreading fast, but not every site supports them, and you’ll still have accounts that rely on passwords. So the best approach today is:
- Use passkeys where offered.
- Use strong, unique passwords everywhere else — see how to create strong passwords.
- Keep 2FA on for password-based accounts — see what is two-factor authentication.
Conclusion
Passkeys let you log in with your face or fingerprint instead of a password, and they’re both easier and dramatically safer — nothing to leak, and immune to phishing. Turn them on wherever you can, and keep strong passwords plus 2FA for everything that doesn’t support them yet. This is where login security is heading, and you can start today.
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