Using a hardware security key for multi-factor authentication is a great way to protect user accounts. In this episode, we look at implementing security keys into our Ruby on Rails applications with Devise user accounts.

In this episode, we look to add on some features to Device with tracking devices that a user has authenticated with and then remote deleting sessions.

Reduce the number of bots and spam your Ruby on Rails application gets with Google reCAPTCHA v2.

Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTP headers to tell browsers to give a web application running at one origin, access to selected resources from a different origin.

Create dynamic roles that can be assigned to users. Based on the assigned role, the user will be able to perform or view various parts of the application.