3 ms·

Triangulating an ap location isn't quick (trust me; I've spent hours trying to nail some down in the past!). Given how short a time the car is in the area I wou

by ErrantX 17y ago

Triangulating an ap location isn't quick (trust me; I've spent hours trying to nail some down in the past!). Given how short a time the car is in the area I would imagine the accuracy wold be no better than a geoip location on your ip.

ugh 17y ago
GeoIP seems to utterly fail where I’m living. It’s often several dozen kilometers off and I have never seen it being off by less than one kilometer. Skyhook wireless is maybe twenty meters off where I’m right now. No contest.
- deleted 17y ago
  [deleted]
- ErrantX 17y ago
  Sorry it was more referring to tying an ap location to ts correct location. It's not verc accurate. Skyhook overcomes that, I guess, by aggregating data so the error is lower.
  - jordibunster 17y ago
    Skyhook does the same thing Google is doing. They drive around with GPS on and record MAC addresses. Then they correlate the two. They know which group of MAC addresses are "visible" at which GPS coordinates. They also do constant updates to the database every time a device queries Skyhook.
    - ErrantX 17y ago
      Sorry I probably didn't explain my point very well. I doubt the Skyhook database is any more accurate than Google's. To get really good triangulation you need an hour or so of driving round the target area (360 degrees for best results). Bearing in mind they dont drive around all that much - in a town, for example, the accuracy for individual AP's will be measured in 10's of meters or possibly more. Quite often when wardriving I will triangulate AP's to 500m or more distance from previous runs. In terms of the Skyhook service they can get much greater accuracy by using multiple access points to aggregate out the error. (Im sure their accuracy improves a little every time you get your location from the service - but I bet it's not perfect)

3 ms·

Triangulating an ap location isn't quick (trust me; I've spent hours trying to nail some down in the past!). Given how short a time the car is in the area I wou

by ErrantX 17y ago

ugh 17y ago
GeoIP seems to utterly fail where I’m living. It’s often several dozen kilometers off and I have never seen it being off by less than one kilometer. Skyhook wireless is maybe twenty meters off where I’m right now. No contest.
- deleted 17y ago
  [deleted]
- ErrantX 17y ago
  Sorry it was more referring to tying an ap location to ts correct location. It's not verc accurate. Skyhook overcomes that, I guess, by aggregating data so the error is lower.
  - jordibunster 17y ago
    Skyhook does the same thing Google is doing. They drive around with GPS on and record MAC addresses. Then they correlate the two. They know which group of MAC addresses are "visible" at which GPS coordinates. They also do constant updates to the database every time a device queries Skyhook.
    - ErrantX 17y ago
      Sorry I probably didn't explain my point very well. I doubt the Skyhook database is any more accurate than Google's. To get really good triangulation you need an hour or so of driving round the target area (360 degrees for best results). Bearing in mind they dont drive around all that much - in a town, for example, the accuracy for individual AP's will be measured in 10's of meters or possibly more. Quite often when wardriving I will triangulate AP's to 500m or more distance from previous runs. In terms of the Skyhook service they can get much greater accuracy by using multiple access points to aggregate out the error. (Im sure their accuracy improves a little every time you get your location from the service - but I bet it's not perfect)