Geolocation in Web and Mobile Apps - Esri Dev Summit 2012

Transcript

1. Geolocation in Web and Mobile Apps Aaron Parecki CTO, Esri R&D Center, Portland Esri Dev Summit, Berlin November 2012 e: aparecki@esri.com w: aaronparecki.com tw: @aaronpk aaron.pk/slides
4. Displaying a Map aaron.pk/slides
5. Displaying a Map aaron.pk/slides
6. Displaying a Map - HTML aaron.pk/slides github.com/esri/quickstart-js
7. Displaying a Map - iPhone aaron.pk/slides
8. Displaying a Map - Android aaron.pk/slides
9. Finding Nearby Businesses aaron.pk/slides
10. Finding Nearby Businesses ¡  ArcGIS Geocoder ¡  Foursquare API ¡  Twitter API ¡  Yelp API ¡  Factual API ¡  Google Places API ¡  And others aaron.pk/slides
11. aaron.pk/slides Place Search with ArcGIS Geocoder quickstart-js/samples/findplaces.html
12. Place Search with ArcGIS Geocoder aaron.pk/slides quickstart-js/samples/findplaces.html
13. Finding Information About a Location Reverse Geocoding aaron.pk/slides
14. ArcGIS Reverse Geocoder aaron.pk/slides http://geocode.arcgis.com/ arcgis/rest/services/World/ GeocodeServer/reverseGeocode ?location=13.421,+52.487 &outSR=4326&f=json Sample Request Sample Response
15. ArcGIS Reverse Geocoder aaron.pk/slides
16. Finding the User’s Location aaron.pk/slides
17. Browser Geolocation ¡  Desktop browsers use nearby wifi hotspots ¡  Mobile devices may use GPS or cell tower positioning ¡  You can also use IP address lookups to get a rough location (but is usually very inaccurate) aaron.pk/slides
18. Finding the User’s Location using Javascript aaron.pk/slides quickstart-js/samples/geolocation.html
19. Browser Geolocation aaron.pk/slides 1. User sees the location permission prompt
20. aaron.pk/slides 2. Browser gets a list of visible wifi access points Browser Geolocation
21. Browser Geolocation aaron.pk/slides 3. Browser sends the list to the geolocation server
22. Browser Geolocation aaron.pk/slides 4. Server replies with the location
23. Browser Geolocation ¡  Usability problem with this approach: ¡  User is left with an empty page waiting for them to press “allow” ¡  You should do the best you can with no location, and then update your page after you get the user’s location ¡  Could use IP-based location to center a map somewhere that is (probably) nearby aaron.pk/slides
24. Monitoring Continuous Location aaron.pk/slides
25. Monitoring Continuous Location in Javascript Now go run around outside! (But keep the browser open) aaron.pk/slides
26. Monitoring Continuous Location on the iPhone aaron.pk/slides This will keep running in the background! (But now you will potentially drain the battery)
27. Getting the User’s Approximate Location Saving battery by aaron.pk/slides
28. Retrieving Approximate Location on the iPhone [locationManager startMonitoringSignificantLocationChanges]; aaron.pk/slides •  Your app will be re-launched in the background when the user moves “significantly” •  Most likely when they change cell towers •  Location is usually very rough, ~500-1500m accuracy
29. Retrieving Approximate Location on Android locationManager.requestLocationUpdate( LocationManager.PASSIVE_PROVIDER, 0, 0, listener); aaron.pk/slides •  Service runs in the background, gets locations when other providers or apps request location. •  Not guaranteed to get any data, but it will use no additional resources. •  Could be cell tower location, could be GPS
30. Differences between Location Services on iOS and Android aaron.pk/slides
31. iOS Location Services ¡  App registers for location updates from the operating system ¡  iOS delivers location events to a delegate object in the app when it’s running ¡  iOS may terminate your app due to high memory conditions, etc. ¡  If terminated, iOS will re-launch the app in the background when a location event is received ¡  Less control over when the data is received, but less code to manage aaron.pk/slides
32. Android Location Services ¡  App creates a background service which runs persistently ¡  The app’s service requests location data from the OS ¡  The OS delivers location data to the service ¡  More control available on Android, but also requires more code to manage aaron.pk/slides
33. Location-Based Triggers aaron.pk/slides
34. aaron.pk/slides Geotrigger™ Overview
35. aaron.pk/slides Geotrigger™ Overview
36. aaron.pk/slides Geotrigger™ Overview
37. Sneak Preview! aaron.pk/slides
38. 500 Meters from a Point aaron.pk/slides
39. Distance from a Point aaron.pk/slides
40. 3-Minute Drive-Time Polygon aaron.pk/slides
41. 3-Minute Drive-Time Polygon aaron.pk/slides
42. 3-Minute Drive-Time Polygon aaron.pk/slides
43. Basic and advanced applications of Geotrigger notifications Use Cases
44. The next generation advertising is local, personalized, and opt-in Advanced: Location combined with history (weather alerts, etc) Personalized Recommendations
45. Once an official walks 100 feet from his building, he can no longer access confidential records. Geofences define conditional access rights. Conditional Access
46. ¡ Scavenger hunts ¡ Social, location-based games using real-life as the playing field New revenue models ¡ Unlock levels based on venue access ¡ Retail location sponsorships Gaming
47. Hospitality and Customer Service ¡ Customer’s prescription refill is ready when they get there. ¡ CRM Integration: based on their purchase history, a favorite item is on sale.
48. ¡ Energy management and notifications ¡ Enter the house, the lights turn on ¡ Leave, and the lights turn off Home Automation
49. *Weather Alert* Cover your cars at the dealership! A hailstorm will begin in 1 hour. Hyperlocal Weather Alerts
50. ¡  Inform tourists of interesting locations as they explore your city. ¡  Bring existing datasets like Wikipedia to life Tourism
51. Public Alerts ¡  Notify citizens about events such as road closures or civic emergencies based on past locations. Photo credit: Flickr: Brian Legate
52. ¡  Send messages to prospective home buyers when their search criteria matches a home nearby. Real Estate
53. Credit: Reid Beels
54. Thank You. email: aparecki@esri.com web: aaronparecki.com twitter: @aaronpk aaron.pk/slides