Supporting web browsers can list available passkeys on login pages, simplifying the login process. On passkeys.dev, this is referred to as Conditional Get (Device Support - passkeys.dev).
This request seems similar to Auto pop up passkey log in (popping up automatically just when visiting a website with stored passkey) - #4 by PartyingChair , however the UI in that request appears to be a function of the browser extension instead of a browser feature.
