GeoClue is a D-BUS service that allows applications to access location information easily across different location technologies like GPS, GSM, WiFi and IP addresses. It treats location retrieval the same way as time or date, regardless of the location format. The W3C geolocation API allows JavaScript to retrieve user location in a browser, while tools like GeoCMS and Magic Ink demonstrate using location data for maps, proximity queries and visualizations. Examples are given of desktop applications leveraging GeoClue to add location-based features for photos, friends and more.

1. Location-aware applications with GeoClue

2. Henri Bergius http://bergie.iki.fi

3. Location matters Your software knows who you are, what time it is, who you know and what you're doing. But it doesn't know where it is.

4. Open mobile devices

5. Mobile device manufacturers are pushing location awareness iPhone, Android, N97, ...

6. Location comes in many flavors

7. GPS

8. GSM

9. WiFi

10. IP address

11. Proximity

12. User tracking

13. ...and that is not all

14. 52.0243759 5.671305656

15. 52° 1' 27.753" 5° 40' 16.7016"

16. Bennekomseweg 24 Ede, the Netherlands

17. GeoClue A D-BUS service that applications can use to become geo-aware. Makes reading and writing geographical information as simple and easy as time or date.

18. GeoClue as simple and easy as time or date. ...regardless of whether you deal with coordinates or civic location

19. Using location on the Web

20. How many times have you had to enter your location to a public transport route planner?

21. W3C geolocation API Easy JavaScript call to get user's location, accuracy depends on implementation http://dev.w3.org/geo/api/spec-source.html

22. W3C geolocation API Firefox 3.5

23. iPhone

24. Fennec

25. Google Gears

26. ...but not N900 / Maemo Browser

27. Or use a GeoCMS Objects can have a location

28. Query data based on proximity

29. Map visualization, editing

30. Or use a GeoCMS www.midgard-project.org

31. Magic Ink http://worrydream.com/MagicInk

32. Examples on the desktop applications using GeoClue and location

33. EOG Map plugin: where was this picture taken?

34. F-Spot plugin: where were these pictures taken?

35. Telepathy: Where are my friends? Information available across the desktop through dbus

36. GNOME panel clock

37. GeoRSS2POI

38. OpenStreetMap-based vector navigation

39. Some things to take from here