I probably don't really, that's why leaving cameras rolling when I'm not there maybe a better idea. I've seen something like strobe lights flashing in the hallway with no explanation, the door across the hallway opened and closed with no one else but me (could have dreamed that one up), I've heard something call me by name not once but twice, had the hair stand up on the back of my neck and could pin point exactly where whatever it is or was in my home. I stopped dead in my tracks when I was walking into the kitchen because I knew it was there. And my brother could feel it also. I can fill anyone in that wants to know here or in chat later this week. I want to take a look at that.