I asked someone I consider an expert at wi-fi, driving and hacking. And got the 
below from him just now:

You would have to be in pretty close proximity to identify where it's coming 
from, I use WiFiFoFum which you can install on smart phones, iphones, etc. that 
have wireless built in, it utilizes signal strength to try and position the 
access point locations... There's more pricey ones out there like AirMagnet 
which has a handheld and can use building specs to pinpoint where its come from 
with GPS. 

We have some kits here that use directional and omni directional antennas with 
signal amplifiers that can find pretty much where its coming from, if its a 
close proximity location I use wififofum and walk around with the sonar view 
and have found it to an actual cubicle. There's also linux based tools I use a 
lot like airodump-ng and aircrack-ng.. Those are more complicated...

You can probably also use NetStumbler (if the SSID is broadcasted) and look at 
the dB strength, as it increases you know you are closer.

http://www.airmagnet.com/products/handheld_analyzer/
http://www.aspecto-software.com/rw/applications/wififofum/index.html
http://www.netstumbler.com/



> -----Original Message-----
> From: Mark A. Ross [mailto:ma...@sdppayroll.com]
> Sent: Wednesday, March 18, 2009 2:15 PM
> To: NT System Admin Issues
> Subject: RE: Is it possible to pinpoint a WIFI connection
> 
> Huge help Jake, thanks.
> 
> -----Original Message-----
> From: Jake Gardner [mailto:jgard...@ttcdas.com]
> Sent: Wednesday, March 18, 2009 11:02 AM
> To: NT System Admin Issues
> Subject: RE: Is it possible to pinpoint a WIFI connection
> 
> I think what you may have to do is modify your wifi to be directional
> when pointed at the AP's.  It will give you a better line of sight.
> 
> Pin-pointing the AP's would involve triangulation.   Ever see the movie
> Pump up the Volume?
> 
> 
> Thanks,
> 
> Jake Gardner
> TTC Network Administrator
> Ext. 246
> 
> -----Original Message-----
> From: Mark A. Ross [mailto:ma...@sdppayroll.com]
> Sent: Wednesday, March 18, 2009 1:59 PM
> To: NT System Admin Issues
> Subject: RE: Is it possible to pinpoint a WIFI connection
> 
> Let me rephrase:
> 
> I am seeking a hardware device or software that will pinpoint a network
> name to its exact location. Ex: You are driving down the street and
> your
> WIFI connection "see's" three WIFI connections, with various signal
> strengths.
> 
> Connection #1. Network name Red  90% signal strength Connection #2.
> Network name Blue  80% signal strength Connection #3. Network name
> Green
> 70% signal strength
> 
> Which house is the Blue network located?
> 
> Thanks...
> 
> Mark
> 
> -----Original Message-----
> From: Jake Gardner [mailto:jgard...@ttcdas.com]
> Sent: Wednesday, March 18, 2009 10:49 AM
> To: NT System Admin Issues
> Subject: RE: Is it possible to pinpoint a WIFI connection
> 
> I had to name my mom's "themoneypit" because of her bad experiences
> with
> the contractors redoing her kitchen and bathrooms.
> 
> 
> 
> Thanks,
> 
> Jake Gardner
> TTC Network Administrator
> Ext. 246
> 
> 
> ________________________________
> 
> From: Eric Woodford [mailto:ericwoodf...@gmail.com]
> Sent: Wednesday, March 18, 2009 12:49 PM
> To: NT System Admin Issues
> Subject: Re: Is it possible to pinpoint a WIFI connection
> 
> 
> wireless laptop and software like netstumbler helped locate homes in my
> neighborhood.
> 
> BTW, friend says he's got an open hotspot in his neighborhood called
> "poopypants".
> 
> 
> On Wed, Mar 18, 2009 at 9:44 AM, Mark A. Ross <ma...@sdppayroll.com>
> wrote:
> 
> 
>       Does anyone know of a piece of hardware or software that will
> allow you
> 
>       to pinpoint a WIFI connection?
> 
> 
> 
>       In other words, you are in a public location and your laptop
> detects 5 unsecure WIFI hosts.
> 
>       How do you know which house is using the network name "Bongo"
> 
>       (Couldn't think of a funnier name, sorry).
> 
> 
> 
>       Mark
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> ***Teletronics Technology Corporation***
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> signature database 3945 (20090318) __________
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> The message was checked by ESET NOD32 Antivirus.
> 
> http://www.eset.com
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> 
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