The only way you can protect yourself from the nazi thugs is to have a locked gate. Put a fence around the property and a locked gate for the driveway. They have to have a search warrant to cross any locked area.
Or buy one of these.
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http://www.thejammerworld.com/product_GPS_Jammer__page_1.html 
And thats the real funny part of the war against the nazi thugs. These are illegal but its legal for them to spy on you.
killerweed420 Reviewed by killerweed420 on . busted by gps...not me Is your vehicle private property? The answer seems obvious: of course it is. But depending on where you parked it, you might give up some rights in actually keeping it "private." Police can place a tracking device on your car without a warrant, according to recent judgment in California. Earlier this year, an Oregonian named Juan Pineda-Moreno was convicted of growing marijuana after police tracked his car to a suspected growing site. Pineda-Moreno appealed, citing the fact that on two Rating: 5