Passkeys and FIDO2: The Future of Passwordless Authentication

Passkeys replace passwords with cryptographic keys.

How Passkeys Work

- Public key stored on server
- Private key on your device
- Biometric or PIN unlock
- No shared secrets

Benefits

- Phishing resistant
- No password to steal
- Cross-device sync
- Faster login experience

Adoption

- Apple: iCloud Keychain
- Google: Google Password Manager
- Microsoft: Windows Hello
- 1Password, Dashlane support

Major sites supporting passkeys: Google, Apple, Microsoft, PayPal, eBay, GitHub.