The problem with passwords
Passwords ask people to remember a growing collection of secrets. Reuse, phishing and data breaches make that model fragile: one exposed password can put several accounts at risk.
A different kind of login
A passkey uses public-key cryptography. Your device keeps a private key, while the service stores a matching public key. During sign-in, the service sends a challenge that your device signs locally. The private key is never sent to the website.
Why phishing resistance matters
Passkeys are tied to the website or app they were created for. That makes it much harder for a fake lookalike page to trick a user into handing over a reusable credential.
What to keep in mind
Passkeys still depend on account recovery, device security and the ecosystem used to sync credentials. Keep recovery options current, protect your primary email account and use a screen lock on your devices.