Screaming Penguin - Source Does Matter

AP story at Boston.com

OLYMPIA, Wash. -- Police cannot attach a Global Positioning System tracker to a suspect's vehicle without a warrant, the Washington Supreme Court declared yesterday in the first such ruling in the nation.

...
''Use of GPS tracking devices is a particularly intrusive method of surveillance, making it possible to acquire an enormous amount of personal information about the citizen under circumstances where the individual is unaware that every single vehicle trip taken and the duration of every single stop may be recorded by the government,'' Justice Barbara Madsen wrote in the unanimous decision.

Doesn't it seem strange that this is getting shot down but "sneak and peek" searches aren't?