How do Android Developers implement User Authentication?
The question is about android
Answer:
They handle user authentication as an Android Developer using OAuth, Firebase Authentication, or their own Back-end solution. API requests are normally handled via libraries such as Retrofit or Volley over secure protocols like HTTPS. It will normally save an Authentication token securely; usually, this would be by encrypted SharedPreferences or Android Keystore. MFA integration shall be added with the intent of protecting the users of the application.