My services is using UIWebView for login/register flow now.
I want to insert the "Sign in with Apple" button in the page but don't want to go for web platform flow (i.e. through Apple JS), because we want to use FaceID / TouchID for login.
Can I place the "Sign in with Apple" Button in the In-App webview, but trigger the native framework action for complete the "Sign in with Apple" flow.
Also, from the Apple Human Interface Guideline (https://developer.apple.com/design/human-interface-guidelines/sign-in-with-apple/overview/), there are only one "Sign in with Apple" button. However, our service have separated "Sign In" and "Sign Up" page. Can I have two button with wordings "Sign in with Apple" and "Sign up with Apple" in the page correspondingly? or any suggested solution for this case.
Thank you!