I am trying to extend the login screen in MacOSX High Sierra/Mojave. As I found out, this is possible by
implementing a new authentication plugin and install it in to the authorization database.
I've downloaded the NameAndPassword example (https://github.com/skycocker/NameAndPassword) which shows how to
implement the interface and overwrite/extend the SFAuthorizationPluginView.
Current Project output is a bundle which is invoked on system login. Custom login screen appears fine on Login/Logout, Sleep & Lock/Unlock by modifying system.login.console and system.login.screensaver plist
But the custom login screen is not appearing in case of Fast user switching mode.