Government agents can sneak onto your property in the middle of the night, put a GPS device on the bottom of your car and keep track of everywhere you go. This doesn't violate your Fourth Amendment rights, because you do not have any reasonable expectation of privacy in your own driveway — and no reasonable expectation that the government isn't tracking your movements.

That is the bizarre — and scary — rule that now... http://www.time.com/time/nation/article/0,8599,2013150,00.html?iid=tsmod...