[PW] GPS

[sylvia ryals]

Since GPS devices are sometimes hidden and used to
stalk victims, what would it require to detect a
hidden one?

Sylvia

~~~
Namiko wrote:

Date: Thu, 4 Oct 2007 14:48:22 -0700 (PDT)
From: NS <sop2nd at yahoo.com>
Subject: Re: [PW] ? cell phone GPS
To: list at project-wombat.org

I think this depends on whether you're talking about
GPS or A-GPS.
Here's a quick overview of A-GPS:
http://www.globallocate.com/A-GPS/A-GPS_Frameset.htm

and of course, Wikipedia has an entry, with an
explanation of how the
system works: http://en.wikipedia.org/wiki/A-GPS

A-GPS is basically a bare bones locator that really
never turns "off"
unless the phone is off or the battery is dead, I
think, although
some handsets (like feature-rich smartphones and PDAs)
will allow you
to choose whether you want to turn the locator off and
go to
"emergency only" mode. 

A-GPS also works without the use of a SIM card; the US
uses both GSM
(like AT&T and T-Mobile) and CDMA (like Verizon and
Sprint) networks.

Namiko



       
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