Location-Based Services. Henning Schulzrinne Columbia University. Overview. Time + space Getting location information Using location information Privacy issues. Getting location information. Universal anywhere in the world independent of network connectivity Non-proprietary
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doesn’t exist in one system
people & vehicle tracking
car park assistance
mobile yellow pages
travel & tourist guides
banners & alerts
location-aware call handling
location-based servicesLocation-based services
Foundations of Location-based Services (Steinger, Neun, Edwardes), modified)
(county, state, …)
See the city in true realtime: how busy is the city & where is everyone going, right now?Red: all anonymous destination activity Green: only unusual destination activity
Press “1” to see the #1 hottest destination, then “1” again to see the restaurants and bars there, etc.
Now available in San Francisco, more cities rolling out in beta version.
Aggregate GPS information
Machine learning algorithm that determines behavior and clusters from anonymous
aggregate movement from all pairs of corners in the city.
Obtains behavioral map of city (vs. geographical map)
reveal device anonymously
(e.g., “nearest gas station”)
reveal identity + location to LBS
(friend finder service)
reveal to individual