What Is Passkey Authentication and Why It Matters
For decades, passwords have been the weakest link in online security. Passkeys — built on the FIDO2/WebAuthn standard — are a true replacement, not just an improvement.
How passkeys work
When you create a passkey, your device generates a key pair: a public key sent to the website and a private key that never leaves your phone or laptop. Logging in only requires unlocking your device (with Face ID, Touch ID or a PIN), which signs a challenge from the server.
Why they're more secure
- Nothing to type, so phishing pages cannot steal them.
- Nothing reusable, so a website breach cannot expose other accounts.
- Synced across your devices via your platform account.
Where you can use them today
Google, Apple, Microsoft, Amazon, GitHub, PayPal, eBay, X and many banks already support passkeys. Most services let you keep your password as a fallback during the transition.
Setting up your first passkey
Visit the security settings of any supported service, choose "Add passkey", and follow the device prompt. The whole process takes under a minute and dramatically improves your security posture.