Many web apps let users sign up for a new account and log in and out of their accounts. Together, signing up, logging in and logging out make up an authentication system.

Let's create an authentication system for a photosharing website built with Ruby on Rails.

If you're new to Rails, we recommend you do this course first.

Community Forums
Get help and ask questions in the Codecademy Forums
Report a Bug
If you see a bug or any other issue with this page, please report it here.