Words used in this guide¶
| Term | Meaning |
|---|---|
| API | A service interface through which software requests content or sends data. |
| BFF | Backend for Frontend: the server interface used by an app to obtain and coordinate its content. |
| CITS | A connected-traffic service exchanging positions and warning information; the exact retained exchange is described for Flitsmeister. |
| FCD | A traffic-data collection path; in the inspected Flitsmeister implementation it batches GPS, timing, speed and heading. |
| FCM | Firebase Cloud Messaging, used to deliver push notifications; analytics about those notifications is a separate function. |
| Native | Implemented in the app/platform rather than a remotely loaded web page. In technical audits it can also refer to compiled machine code; check the context. |
| UDS header | A persistent publisher tracking identifier attached to a request; NU.nl's audit distinguishes it from necessary service headers. |
| Analytics | Measurement and analysis of activity, such as screens opened or videos played. |
| Attribution | Associating an action, installation or purchase with a campaign or source. |
| Audience measurement | Estimating or counting who/how many use content; the method may combine tags and research panels. |
| Collector / endpoint | The server application or address that receives requests. A loader/configuration address has a different role from an event receiver. |
| Consent management platform (CMP) | Software for displaying privacy choices and communicating or recording them. |
| Cookie / local storage | Ways to store values for web content. Values can include identifiers; storage use alone does not establish tracking. |
| Event | A record that an action occurred, with optional context and identifiers. |
| Geofence | A defined geographic area used to trigger behaviour when a device enters or leaves it. |
| Hash | A computed representation of a value; repeated matching inputs can remain recognisable. |
| Identifier / ID | A label for an account, installation, session or other entity. |
| Pseudonymous | Represented by a label instead of an immediately readable identity; linkability can remain. |
| SDK | Software Development Kit: reusable software a developer includes in an app. |
| Session | A period of use grouped by the app or service's rules. |
| Telemetry | Information reported about use, operation or performance. The precise fields and purpose matter. |
| WebView | An embedded browser inside an Android app; it can load remote scripts as well as content. |
Start with how tracking works for an example connecting these terms. Tracker profiles explain named services rather than assuming their names are self-explanatory.