Hi, Swizzling is one of the most straightforward ways to replace fonts in the whole application seamlessly. Is there a chance Apple will provide an API for replacing system fonts?

You can launch the extension from inside of your app by starting one of these requests as described in WWDC - https://developer.apple.com/videos/play/wwdc2020/10666/: • ASAccountAuthenticationModificationReplacePasswordWithSignInWithAppleRequest - https://developer.apple.com/documentation/authenticationservices/asaccountauthenticationmodificationreplacepasswordwithsigninwithapplerequest • ASAccountAuthenticationModificationUpgradePasswordToStrongPasswordRequest - https://developer.apple.com/documentation/authenticationservices/asaccountauthenticationmodificationupgradepasswordtostrongpasswordrequest You can debug the extension by attaching the debugger in Xcode -> Debug -> Attach to Process ... What I struggled with so far is getting the Security recommendations to show up in Settings. I only saw the "Change password on Website" button, but not the "Use Sign in with Apple" nor "Change to Strong Password" buttons, which would invoke the extension.

Edit - Use Sign in with Apple appeared on Simulator, but not on a real device (Xcode 12 Beta 6 / iOS 14 Beta 6)

Thank you very much for the reply! You can find a summary of the request in FB9048011.