What technique is NOT typically used in Disney's surveillance monitoring?

Tracking guest purchases is not a technique typically associated with surveillance monitoring at Disney. Surveillance primarily focuses on the observation and analysis of physical behavior and movements within the parks for security and safety purposes. Techniques such as analyzing camera feeds and watching for unusual behavior are essential for identifying potential security threats or managing crowd control. Tracking movements within the park is also a crucial aspect of surveillance, as it helps ensure the safety of guests and staff by monitoring how crowds gather and disperse. While tracking guest purchases is important for operational and marketing purposes, it does not fall under the scope of traditional surveillance monitoring aimed at maintaining security within the park environment.