On 2014-03-31 08:06, B.J. Herbison wrote:
> Thanks for the responses.
> 
> tl/dr: For my house, the issue is probably the requirement of three access 
> points.
> 
> When scanning from my home I currently have 3 wifi access points visible, 5 
> scanned. One of the three appears to be the phone itself, even though I have 
> the hotspot turned off. (I've never run MozStumbler while the phone was a 
> hotspot.) The other two are access points in my house. This is probably 
> typical in this area, houses are far enough apart that seeing a good 
> connection to a network from a neighbor is unusual.
It was increased to 3 apparently because of an attack.  
https://github.com/mozilla/ichnaea/issues/126 is for reducing it back to 2.  
There is also https://github.com/mozilla/ichnaea/issues/23 for 1 WiFi + 1 Cell. 
 Wifi geolocation isn't going to be particularly useful in rural areas.
> 
> Assuming the phone's hotspot has been identified as mobile, that means only 
> two useful access points are visible. Requiring three access points will make 
> the service unusable for a large potion of the country. Why are three access 
> points required?
> 
> Currently the phone GPS is showing a location about 100 meters east of my 
> house, but the location button shows a location about 1000 meters north.
Most likely using the cell tower, not the WiFi.  The Cell tower is probably 
towards the north.
> 
> I've scanned driving away from my house to the north and south (and toward 
> from both directions). I've headed south more often, so any bias in the 
> locations of my house wifi should be toward the south.
> 
> I am using MozStumbler version 0.17.
> 

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