The FIDO login method with Passkeys eliminates the need to transmit passwords. Authentication is handled via biometrics, PIN, or pattern — depending on the device being used.
A Passkey consists of two parts: a private key stored securely on your device, and a public key stored, for example, on a website.
When logging in, the website requests verification from the private key on your device, which confirms the login using the configured security method—such as Face ID on a phone or Touch ID on a laptop.
More information: https://fidoalliance.org/passkeys/