Which feature allows you to control when user sessions are recorded in Session Replay?

The feature that allows you to control when user sessions are recorded in Session Replay is the session replay opt-in mode. This mode provides the flexibility to determine when users permit their sessions to be recorded, creating a balance between user privacy and the need to analyze user interactions. By enabling opt-in functionality, organizations can ensure that only users who consent to session recording will have their interactions captured, which is crucial for compliance with data protection regulations and best practices concerning user privacy.

Other features mentioned, such as data masking settings, input validation, and action buffering, serve different purposes. Data masking focuses on protecting sensitive information during recordings. Input validation ensures data integrity and proper user input handling. Action buffering deals with how data is collected prior to being sent for processing. However, none of these directly control the actual recording of user sessions in the context of opt-in or opt-out preferences.