In my opinion sticker or not, if your ridin around town bumpin your shit, someone see's you car in a parking lot, they are going to know that you have a system. Regardless of the sticker. I have 2 rockford stickers on my jeep. I aint worried about them. Use common sense. Lock your doors, park in a well populated area if possible. If your doors are locked the only way in is for someone to break them. SOMEONE has to notice this!