This fifth installment covers configuring Expo Router for Google authentication on iOS devices. The tutorial focuses on wrapping the root layout with ClerkProvider and setting up environment variables for the publishable key. Developers learn to structure routes using the new Protected component, ensuring only authenticated users can access specific pages.

Proper route configuration prevents unauthorized access and streamlines user flow. The guide details using useAuth hooks to manage login states, directing users to login or protected screens. This approach simplifies navigation logic and maintains security throughout the application without complex conditional rendering.

Developers must import ClerkProvider, useAuth, and Stack from their respective packages. The code snippet demonstrates checking authentication status before rendering specific views. This method ensures the app respects user sessions, providing a seamless experience between public homepages and private content areas.

With routing complete, the series moves toward finalizing the authentication flow. Future steps likely involve handling token caching and testing the full Google login process on a physical device.