I've been looking into this in preparation for our new DS arriving in a few weeks' time - I can deal with the situation while we're out and about, but I'm looking for an elegant solution for while we're home with the car parked on the driveway. I figure it's best to fit something to our existing habits rather than trying to change habits, much more likely to succeed this way.
So, to fit our existing habits, has anyone come across something like a decent metal construction RF shielded key box? It seems to me that would be just about ideal - we can replace the existing hook board where we hang keys with a box, everything's safe when the door is closed, and nobody has to remember to keep putting the keys in individual bags (or the microwave ... or fridge ...).
I'm thinking of something a bit like this:
http://www.screwfix.com/p/20-hook-key-cabinet-safe/13599. I could take the paint off around the edges of the door and the cabinet, then fit a conductive gasket to give it the full electrical closure needed, but if there's something out there already that will save the effort (and hence stand a chance of being ready before the car arrives!) that would be useful.
What are other people doing to protect against LF amplification attacks for cars parked at home? Or ... am I being paranoid?