Leo Huynh • 7/17/2026

Passkeys: what they are, how they work, and why you should use them

This article provides a comprehensive overview of passkeys, a passwordless authentication method based on the WebAuthn/FIDO2 standard. It explains the technical process of registration and sign-in using public/private key pairs, highlighting how private keys remain securely on the user's device. The article details key benefits: immunity to server breaches (since only public keys are stored), phishing resistance (passkeys are domain-bound), elimination of password reuse, and faster login without needing 2FA. It also covers cross-device syncing via iCloud Keychain or Google Password Manager.

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#security #authentication #cryptography