Learn how to implement persistent user login authentication with JWT tokens in a React application. Discover secure methods for handling authentication without storing tokens in local or session storage. Explore the creation of a PersistLogin component, updating the useRefreshToken hook, and addressing security issues. Implement a logout functionality, test various scenarios including expired tokens, and add a "Trust Device" feature. Master the techniques to maintain user authentication across app refreshes and revisits while ensuring security best practices.