In Sweden RF based movement tracking using passive equipment should be perfectly fine as surveillance laws essentially only cover audio, images, and video. As l

In Sweden RF based movement tracking using passive equipment should be perfectly fine as surveillance laws essentially only cover audio, images, and video. As long as it doesn't identify people, and doesn't violate expectations of privacy, I don't think there are any laws that could be applied. Fixed cameras here must be placed so that they either don't show any non private property, areas the public is expected to traffic, or that all that might be imaged has given explicit permission. Outside of this you need a permit, which is awarded rather sparingly, and which also includes the possibility of a mandated inspection of both cameras, control room, and any recorded material.