64 Personal Content Experience: Managing Digital Life in the Mobile Age devices, the content is not only created in more places, but also accessed from more places. For distributed content there are some unique problems that need to be solved. First you have to fi n d where the content is stored or where to store your own. Next you may need to transfer the content between devices, perhaps also transcode or adapt it in order for it to fi t some more limited devices. Third, there arises the problem of interoperable devices – how different devices and applications can together provide a valuable service to the consumer. Also its not only devices that must work with each other, but different applications in those devices must share a common language and common presenta- tion of the data in order to successfully exchange information. All these aspects are discussed in Chapter 5. 3.4.2 Mobile Content is Tied to Creation and Usage Context Content created while on the move is inherently related to the context, or situation, of its creation (see section 4.7 for more discussion on context). When such a content object is later enjoyed, the experience is enhanced with some of the captured context. Context also ties the content object to a larger picture. Similarly, while enjoying the content, the context at that time is used to fi ne-tune the experience. The cap- tured context can also be used further to allow a rich set of related automatic grouping schemes based on location. 3.4.3 The Same Content Types, New Usage Patterns Currently, there are two mainstream mobile content types over the others: music and photos. There are a large number of other mobile content types, but the ubiquity of these two makes them good candi- dates for generalization when content types common to both stationary and mobile use are being considered. What is typical of both music and photos is that the actual fi le types and formats are essentially similar regardless of the mobility aspect – the same JPEG fi les and MP3 songs are accessed in desktop and mobile devices alike. However, the way they are used, and the operations performed on them, varies signifi cantly between station- ary and mobile use scenarios. For instance, the importance of a song sitting in a desktop computer’s mass memory may be determined by the play count, whereas in a dedicated MP3 player with a limited amount of memory, the time the song has remained in the device without being replaced with another song may also indicate the song’s importance.