"This data may also include advertising identifiers (such as IDFA or Android Advertising ID) only when you have provided explicit consent, and it is used solely to understand which channels drive app installs and subscriptions. While this data does not include your name, email, browsing activity, or precise location, it may be linked to your device or app installation for measurement purposes and can be treated as personal data under applicable privacy laws."
ExpressVPN collects advertising identifiers (IDFA, Android Ad ID) and device-level data that can be linked to a device or app installation, enabling cross-service tracking for marketing attribution purposes.