The Android Authenticator component uses string resources for all of its labels, so internationalization can be accomplished by providing a custom `strings.xml` file. For example, in a `values-fr/strings.xml` file you can have lines like the following to provide custom translations for all Authenticator strings:

```xml
<string name="amplify_ui_authenticator_field_warn_existing">Désolé, c\'est déjà pris</string>
```