Absolutely! Motion triggered lights are HATED by crooks! These can also be mixed in with lights that can be remote controlled, or put on timers. The idea is to keep the "light-dark topography" seemingly random and unpredictable so that crooks cannot plan a long shadowy stalk to your window. At any time in the open, he may suddenly be bathed in light from any direction.
OTOH, lights on a house which are on all the time may be useless, or worse, since they night blind the owner while providing certain dark lanes for the infiltrator.
I had a tiny bit of excitement one time. Someone saw a guy with a gun in my backyard at 2 in the morning. Two cops came to the door and I grabbed my shoes and we checked. The cops spread out across the backyard and I was a little behind and way to the left. It was interesting but then I had to ask myself what in the world was I doing this for? I guess it was my stuff and it was still my responsibility. I never did tell the cops I was carrying. No one was found, of course. Interesting night.
I am developing a habit of pulling on my cover garment when I see something I don't like. I have to quit that.