Difference between revisions of "Location Based Services"

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Modern mobile phones store geographic information, GPS coordinates, wifi networks, mobile cells.
 
Modern mobile phones store geographic information, GPS coordinates, wifi networks, mobile cells.
  
== IOS ==
+
= IOS =
  
 
* Stores wifi networks:
 
* Stores wifi networks:
Line 12: Line 12:
 
* Data used ..?
 
* Data used ..?
  
== Android ==
+
= Android =
=== Information stored ===
+
Android's location services stores information for caching reasons in two database files to speed up your GPS fix.
==== Location on your device ====
+
== Information stored ==
 +
=== Location on your device ===
 
* /data/data/com.google.android.location/files
 
* /data/data/com.google.android.location/files
 
** cache.wifi
 
** cache.wifi
 
** cache.cell
 
** cache.cell
  
==== How much get's stored ====
+
=== Database ===
 
* Database is limited to:
 
* Database is limited to:
 
** 200 Wi-Fi entries
 
** 200 Wi-Fi entries
 
** 50 Cell entries
 
** 50 Cell entries
 +
{| border="1" cellspacing="0" cellpadding="5"
 +
|Value || Type || Description
 +
|-
 +
|accuracy || int ||
 +
|-
 +
|confidence || int ||
 +
|-
 +
|latitude || double ||
 +
|-
 +
|longitude || double ||
 +
|-
 +
|readingTime || long ||
 +
|}
  
=== Settings ===
+
== Settings ==
 
* Settings -> Location & Security -> Use wireless networks
 
* Settings -> Location & Security -> Use wireless networks
 
** when ticked: stores information in two databases
 
** when ticked: stores information in two databases

Revision as of 00:57, 27 April 2011

Modern mobile phones store geographic information, GPS coordinates, wifi networks, mobile cells.

IOS

  • Stores wifi networks:
    • BSSID, Location, Accuracy, Timestamp, ...
  • Stores mobile geo information:
    • your providers cell towers, Cell Numer, Location, ...
  • Database without size limit
  • Sends data how?
  • Correlates with GPS
  • Data used ..?

Android

Android's location services stores information for caching reasons in two database files to speed up your GPS fix.

Information stored

Location on your device

  • /data/data/com.google.android.location/files
    • cache.wifi
    • cache.cell

Database

  • Database is limited to:
    • 200 Wi-Fi entries
    • 50 Cell entries
Value Type Description
accuracy int
confidence int
latitude double
longitude double
readingTime long

Settings

  • Settings -> Location & Security -> Use wireless networks
    • when ticked: stores information in two databases
    • when un-ticked: no information get's stored on your device