Cache management in a mobile

摘要

A user (30) visiting an exhibition space (10) or the like is equipped with a mobile device (31) in communication with a service system (35). Media items held by the service system (35) are associated with various locations (20-23) around the exhibition space (10) and a user (30) arriving at such a location is presented with the corresponding item or items. These media items are pre-emptively loaded into a cache of the user's mobile device (31) in dependence on the user's progress around the hall (10). Items can also be flushed from cache on this basis.