Setting Up TOTP Two-Factor Authentication in Ruby on Rails Application

This guide assumes that you are already familiar with the basic concepts of Ruby on Rails and Devise and have already set up an app with Devise.— Existing Ruby on Rails project— Installed and configured Devise— Tailwind CSS in the assets pipeline (only for the view part)— Turbo enabledI’ll be using dry-rb monads and result matcher, so if you want this code to work without additional customization, you’ll need to install dry-monads and dry-matcher.