Passkey
Simple Explanation
A passkey lets you sign in using your device, often with a fingerprint, face scan, or screen lock, instead of typing a password.
Technical Explanation
Passkeys use public-key cryptography: the service stores a public key while the private key stays protected by your device or credential provider.
Business Use Case
A company offers passkeys to reduce password-related account takeovers.
Real-Life Example
You unlock your phone to sign in to a website without entering a password.