Do you have recordings when no one is there? Could the SAMi camera belong to the Ghost Busters? The answer, not surprisingly, is no. Are you seeing white dots floating across the screen? What the camera is detecting is actually dust. The infrared illuminators pick up the reflection off of dust moving in the air. Windy days increase the chances of dust particles circulating with enough velocity to be noticed. This was rather a fun challenge for us to figure out.