Yes, registration is usually necessary to use the Reddy Anna Online Book Login (https://reddyannaplay.co.in/) system. Without a valid account, users will not be able to log in and access the platform's features. During registration, users may be required to provide basic information like name, email, mobile number, and create a password. Once the account is verified, users can log in anytime to view content. Registration helps personalize the experience and also ensures that all user activity is secure and traceable within the platform.