In swiftui mobile app, I am using the mobile sdk from firebase. I am confused how to store the ID\_token. Do I even need to store the ID token once I get it or firebase auth just stores it and I retrieve from it? I am not talking about retrieve token from firebase cloud but once I have retrieved it how should I store it so that within the hour it doesn't expire I can reuse it
 When you sign in a user with Firebase Authentication in your SwiftUI mobile app, Firebase automatically manages user sessions. It handles token refreshing and manages the ID token, so you don't need to manually store the ID token for most use cases.

To use the ID token in your app without manually storing it, you can use the `currentUser` property provided by Firebase Authentication. This property holds the current user's signed-in state and their ID token. Here's an example:

```swift
import FirebaseAuth

if let user = Auth.auth().currentUser {
    // User is signed in.
    // You can access the ID token using user.getIDToken(completion:)
    user.getIDToken { (idToken, error) in
        if let error = error {
            // Handle error
            return;
        }

        // Use idToken
    }
} else {
    // No user is signed in.
}
```

However, if you need to manually store the ID token (for example, if you want to send it to your custom backend server), you can store it in the Keychain, which is a secure and encrypted storage area provided by iOS.

Here's an example of how to store the ID token in the Keychain using the `Keychain
You don't need to store the ID token yourself. Firebase Auth stores it for you and will automatically use it to authenticate requests. You can retrieve the ID token from the Auth instance and use it as needed.