298 Personal Content Experience: Managing Digital Life in the Mobile Age the school cafeteria. Eddie probably wanted to get together for the break, but today she would prefer to lunch with Liz. Besides, it might be a good idea to let him feel a touch of doubt. This guy is too used to having his way. So it’s Angie in command now. Here, click the “Decline” button. Sorry Eddie, your little cutie beauty blondie baby’s not there for you, not this time. Now, where’s Liz . . . ? Contacts – Find – Gals – Lizzie – Locate . . . 7.2.6 Other Applications For multipurpose devices, location information can enable numerous different applications, including location-aware browsing and search- ing, games, location-based reminders, location-aware presence infor- mation, and so on. Most of these applications deal with personal content more or less directly. Location-based prediction is an interesting feature – by learning the user’s daily routes, the application can be used to predict where and when the user will head to from the current location (Ashbrook and Starner 2002). The information used in prediction is one kind of implic- itly applied personal content: the locations you usually visit throughout a day, and the locations you probably go on to from there. 7.2.7 Discussion Positioning is destined to become a standard feature in mobile phones. Gartner (2006) estimates that by 2010, almost 40% of all handsets will support GPS. That amounts to more than a billion devices. This market volume will drive component costs down, which in turn allows the introduction of GPS functionality in many other kinds of devices. All MP3 players and video viewers may ultimately feature positioning, although it is not yet clear what the benefi ts of that function will be. For example, game consoles could use GPS to fl ock nearby people together in virtual worlds. Is that a desirable feature? Maybe not – but some other positioning feature will become the killer app in a game console. Time will tell. Generally speaking, most location-based applications and devices do not allow much content management, besides some rare actions in the “G” section, such as creating annotations. Especially enjoying location-based personal content, except for games, is rarely seen. The same holds for sharing, which is an obvious extension to enjoying. One could effortlessly envisage services and applications that tackle this aspect of location information. Approaches that are marginal as of today, such as cellspotting, may well show the way towards this in the near future.