A Norwegian friend told me this a few years back; how the licensing people can just go into your homes when they show up and check for the presence of TVs. Crazy.
Well your Norwegian friend was wrong about that. All they could do was knock on your door and ask you if you had a TV, and you could more or less politely tell them you didn't and that would be the end of it, even if you did own one and it was on and both you and the license guy was able to hear it playing in the background. :)