Sentry is a service used for application monitoring and error tracking, handling personal information (PII) in a way that protects users' privacy. Sentry collects PII about website visitors, customers, and other interactors, but does not control data sent by customers using the service for purposes of monitoring their app. Users have specific rights related to their PII, and can contact Sentry with questions or concerns about their privacy. Sentry also provides additional information and resources for California residents.