Dave Hinz wrote:
On Tue, 02 May 2006 14:21:38 -0500, Jon Elson wrote:

You think this is funny! For 911 response purposes, the cell phone
companies are
required to triangulate the location of all phones every couple of
minutes from
the several cell sites that can "hear" the phone, whenever it is turned
on to be
able to receive calls.


Really?


(The newer phones have GPS receivers in them,
and the
cell sites interrogate the phones for location every couple of minutes.)
The cell
phone companies are required to keep this location tracking data for 7
years for
law enforcement purposes.


Cite, please?
OK, here's a roundup of recent cases :
http://www.eff.org/legal/cases/USA_v_PenRegister/

Jon