A feature coming to Safari 14 later this year involves logging into websites with Face ID and Touch ID. Through the Web Authentication API, web admins can let people log in using Apple’s biometric authentication, helping to kill passwords.
Safari 14 Authentication
Added a Web Authentication platform authenticator using Face ID or Touch ID, depending on which capability is present.
As I understand it, a user will have to already be using a traditional username and password combination to log in. But after logging into a website with this capability, the user will be prompted to log in with Face ID / Touch ID next time. This not only gives users a level of convenience similar to Sign In with Apple, but once the traditional method is abandoned it will be harder for your account to be hacked if it’s no longer tied to the email/password combo.