It is good because it is easy to understand with a simple display. Neighborhood home centers etc are not treated, so it was good to buy. I plan to combine real cameras, but even this alone has begun to produce effects.
Although I would like to use a bit for deterrence improvement of crime prevention equipment, these stickers are unusually expensive and hesitant to hesitate to use. This product is not cheap, but it is about a price that is okay, so if you are lost please feel free.