Relying Party
In WebAuthn terminology the relying party is identified by its domain, and a passkey is permanently bound to that identifier at registration. That binding is what makes a lookalike site fail. See How Passkeys Work.
In WebAuthn terminology the relying party is identified by its domain, and a passkey is permanently bound to that identifier at registration. That binding is what makes a lookalike site fail. See How Passkeys Work.