title: Best practices to make a sign in view at launching app on ios
body: <p>I would ask you what are the best practices to make a sign in view on ios.
  And only after fetching those text fields, launch the application content.
  Does I make two windows ? Apple recommended to use two windows only for external display.
  If it is a good practice, how can I build this ?</p>
  
  <p>Thank's in advance.</p>