input: [Category] Performance [Party] AdXTracking [Purpose] 
output: AdXTracking use cookies to help identify user behaviour in our App. The user behaviour identified includes: the Device ID used by a specific user and events in our App (including, without limitation, login and successful completion of the transaction). This allows us to make more effective decisions about targeted marketing (including the ability to segment users so that we can push relevant advertisements to them; and to more efficiently handle and optimise our mobile campaigns on social networks and the web.