I use several units from Eagle Telonics (http://www.telonics.com/)for remote 
monitoring.  They can be set to broadcast on practically any frequency, can 
be triggered by magnetic (a vehicle), ground sensing (footsteps), and visual 
(breaking an infrared), and can be adjusted for sensitivity and footsteps 
(two footed, four footed).  Any signal event can trigger a camera.  The 
units can be buried and are practically invisible when properly set up, and 
will deploy for 60-90 days on their batteries.  Problem is, when the bad 
guys or just a nosey parker finds the camera or the sensor wires, the unit 
is gone.  We are currently purchasing a different setup which has a remotely 
triggered camera and intrusion detection, but the unit itself is entirely 
remote - sending the signal and the photos (infrared or flash) back to 
another unit located up to a 1/4 mile away where they can be recorded on a 
DVR, sent by repeater to another remote, or relayed to a server which will 
deliver to a desktop computer.  Check http://www.supercircuits.com/ for this 
and other really great security equipment.  Especially like those cameras 
built into a phillips screw head...

Stephen Austin

----- Original Message ----- 
From: "Joe Dent" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, March 15, 2006 12:31 PM
Subject: Re: Urban archaeology methods question
> List Folks:
>
>    My county in rural West Virginia has these cameras called "ground hogs"
> that are moved from place to place to document illegal dumping -- a 
> chronic
> activity in Appalachia.  The cameras are hidden and don't cost much.
> Sustained motion starts them recording and the scofflaws are then hauled
> into court.  Few are hanged, but jail time and hefty fines result. Such
> cameras could also work with looters.  Probably the most effective
> preventative element of the package is the signs that go with the cameras
> warning of their presence.
>
> joe dent
> american unv.
>