adding "where" to mobile and web applications

Adding “Where” to Mobile and Web

Applications1Wednesday, April 23, 2008

me

Ryan Sarver

Director of Consumer Products

Skyhook Wireless / Loki

http://loki.com

http://skyhookwireless.com

http://sarver.org

http://linkedin/in/rsarver

2Wednesday, April 23, 2008

practical tools to allow you to add

location capabilities to your website or app

today

3Wednesday, April 23, 2008

sarver.org for links after session

4Wednesday, April 23, 2008

location = context

5Wednesday, April 23, 2008

context = higher relevancy

6Wednesday, April 23, 2008

location = higher relevancy

7Wednesday, April 23, 2008

location comes in many flavors

8Wednesday, April 23, 2008

42.2817, -71.18279

9Wednesday, April 23, 2008

Polygons

10Wednesday, April 23, 2008

747 Howard StSan Francisco, CA

11Wednesday, April 23, 2008

Howard St & 3rd St

12Wednesday, April 23, 2008

South of Market

13Wednesday, April 23, 2008

how you display it can be used as a way of

blurring location

14Wednesday, April 23, 2008

markers in maps can be difficult when dealing with exposed location

15Wednesday, April 23, 2008

Ryan checked into Soma, San

Francisco, CA

16Wednesday, April 23, 2008

Sharing Location with

Friendshttp://my.loki.com

17Wednesday, April 23, 2008

1. Offer everything you can

2. Degrade gracefully

3. Allow the user to change it

Know your users, know your use cases!

Geotargeting Rules of Thumb

18Wednesday, April 23, 2008

yoursite.com ?lat=&lng=

Tip!

19Wednesday, April 23, 2008

where does location happen?

client & network

20Wednesday, April 23, 2008

Mobile

Web Apps

Laptop

Location Broker(FireEagle)

Mobile

Web Apps

Laptop

asynchronous

many locations in,one location out

21Wednesday, April 23, 2008

22Wednesday, April 23, 2008

<?php$fe = new FireEagle( $fe_key, $fe_secret, $_SESSION['access_token'], $_SESSION['access_secret']);

$r = $fe->update(array(‘q’ => ‘san francisco, ca’));

$loc = $fe->user();foreach ($loc->user->location_hierarchy as $location) { echo $location->latitude.", ".$location->longitude;}?>

FireEagle Pseudo

23Wednesday, April 23, 2008

Desktop Web Profile

• Stationary sessionssingle location lookups

• IndoorsGPS and Cell Tower don’t work

• Easier data entry

• More complex data can be displayed

24Wednesday, April 23, 2008

Mobile Profile

• Transient sessionssingle location and continuous

• Indoors and OutdoosIP doesn’t work

• Difficult data entryminimize the amount typed

• Small screen size, low computing power, be “power-aware”

25Wednesday, April 23, 2008

Geolocation Methods

1.Triangulate2.Associate3.Geo Term Extraction4.Data Entry / Geocoding

26Wednesday, April 23, 2008

Triangulation

Determine position of an unknown object relative to known objects

• Wi-Fi

• GPS

• Cell Tower27Wednesday, April 23, 2008

1 meter

20 meter

2,000 meter

GPS

Wi-Fi

Cell Tower28Wednesday, April 23, 2008

San Francisco Wi-Fi

29Wednesday, April 23, 2008

Wi-FiLoki Javascript API

http://loki.com/developers

http://loki.com/developers/documentation

30Wednesday, April 23, 2008

GPS (sideload)Garmin Communicator

Pluginhttp://www.garmin.com/products/communicator/

http://developer.garmin.com/web-device/garmin-

communicator-plugin/

31Wednesday, April 23, 2008

Association

32Wednesday, April 23, 2008

Association

• Match an IP Address to a physical location

• Not an exact science

• Best for city-level geotargeting

• False positives and in the correct state only ~85%

33Wednesday, April 23, 2008

IP Geolocation

Quovahttp://www.quova.com

ip2locationhttp://www.ip2location.com

MaxMindhttp://www.maxmind.com

34Wednesday, April 23, 2008

Geo Term Extraction

Resolve an arbitrary string into a geographical point or area:

“food in cambridge” = “food” in “Cambridge, Massachusetts, USA”

MetaCarta Query Parser APIhttp://ondemand.metacarta.com/?method=QueryParser

Urban Mapping GeoModshttp://urbanmapping.com/geomods/index.html

35Wednesday, April 23, 2008

Geocoding

Resolve a geographically-based string into a geographical point or area

36Wednesday, April 23, 2008

Geocoding

• Geonames Webserviceshttp://www.geonames.org/export/

• Google Geocoder Classhttp://code.google.com/apis/maps/documentation/services.html#Geocoding

• Yahoo Geocoding APIhttp://developer.yahoo.com/maps/rest/V1/geocode.html

• Geocoder.ushttp://geocoder.us/

37Wednesday, April 23, 2008

Location in the Browser

• LocationAware.orgSession at Where 2.0http://www.locationaware.org

• W3C Web APIhttp://www.w3.org/2006/webapi/

navigator.getGeolocation()

38Wednesday, April 23, 2008

Mobile Location

39Wednesday, April 23, 2008

Mobile Location APIs

• iPhone Core Location APIWi-Fi, Cell Tower

• Symbian S60 Location APIGPS, A-GPS

• J2ME JSR-179GPS, device-specific

40Wednesday, April 23, 2008

@implementation MyLocationGetter

- (void)startUpdates{ if (nil == locationManager) locationManager = [[CLLocationManager alloc] init];

locationManager.delegate = self; locationManager.distanceFilter = 1000; // 1 kilometer locationManager.desiredAccuracy = kCLLocationAccuracyKilometer; [locationManager startUpdatingLocation];

}

41Wednesday, April 23, 2008

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ // Disable future updates to save power. [manager stopUpdatingLocation];

printf("latitude %+.6f, longitude %+.6f\n", newLocation.coordinate.latitude, newLocation.coordinate.longitude);}

http://forums.macrumors.com/showthread.php?t=455767

42Wednesday, April 23, 2008

Other APIs / Platforms

• Skyhook SDKWinMo, S60, Linux, XP, Vista, OSXhttp://www.skyhookwireless.com/developers

• WHERE WidgetsAT&T, Sprint, Alltel, MetroPCShttp://developer.where.com/

43Wednesday, April 23, 2008

Skyhook Example int main(int argc, char *argv[]) { WPS_SimpleAuthentication authentication; authentication.username = argv[1]; authentication.realm = argv[2]; WPS_Location* location; int rc = WPS_location(&authentication,

WPS_NO_STREET_ADDRESS_LOOKUP, &location);

if (rc == WPS_OK) printf("%f, %f\n", location->latitude, location->longitude); WPS_free_location(location); return 0; }

44Wednesday, April 23, 2008

Cell Tower

• Zone Tag (yahoo)http://developer.yahoo.com/yrb/zonetag/

• OpenCellIDhttp://www.opencellid.org

• CellDBhttp://celldb.org/

45Wednesday, April 23, 2008

Upcoming Events

• Where 2.0Burlingame, CAMay 12th - 14th

• WhereCampMountain View, CAMay 17th - 18th

46Wednesday, April 23, 2008

Questions?

47Wednesday, April 23, 2008