Hiro, not really, if you have the shields that block a certain type of frequency, and have blueprints printed on material that requires said blocked frequencies to detect.
And the technology angle is not in my favor, Nisorin. Again, if I aim at a wall in my room, and go off by one degree, I would miss by an inch or two at most. If I aim at a distant galaxy, then go off by one degree, I would miss by thousands, if not millions of lightyears. I can't be precise enough for me to be able to hit every single thing in the dimension. That's only possible if I move location. Aralia is moving location by orbiting, yes, but I mean significant movement. Anything that is detected acts as a good filter, be it a horrible filter, or a very effective filter.