title: Saving login screen username and password for Kivy app
body: <p>I am working on a Kivy app for iOS and Android and need help with keeping the user persistently logged in, even after the app is closed or killed. I am using Parse to store user credentials.</p>
  
  <p>I've already added an on_pause method to the App class, but this only keeps the user logged in if the app is closed but not killed. Is there a best practice for securely allowing persistent user login with Kivy, even after an app is killed?</p>
  
  <p>Edit: I prefer a single Kivy solution that works for both an Android app and an iOS app, without the need to edit/add iOS or Android specific code.</p>