Requiring User Login for Mobile App

1. How do I keep users logged in to my mobile app?
2. Why does every app require an account?
3. Which authentication mechanism is recommended for mobile app authentication?
4. What are the pros and cons of having users log in to the app every time?

How do I keep users logged in to my mobile app?

When users log in to your application, store the login status into sharedPreference and clear sharedPreference when users log out. Check every time when the user enters into the application if user status from shared Preference is true then no need to log in again otherwise direct to the login page.

Why does every app require an account?

The first thing the app prompts you to do upon open is create an account or sign in. Since it is a social network that connects a user with their real-life networks, using personal data is vital to connect users to their friends and family. Without it, there is a significant decrease in functionality and value.

Which authentication mechanism is recommended for mobile app authentication?

oAuth has become especially helpful for the repeated transmission of authenticating credentials. Thus, an application requests the user's credentials with each new inquiry, which allows securing data exchange between a mobile application and a remote server.

What are the pros and cons of having users log in to the app every time?

The pros are that they'll interact more with your site, the cons are that anyone with access to the computer can act as that person and can commit fraud. If your service is interaction based, and low fraud risk, keeping users logged in might make sense (Amazon, Stack Exchange).