My 4 cameras will pick up every movement inside and outside of activity zones regardless of settings. The lag time between the activity and my receiving a notification can be as long as 30 seconds. Not much help there where somebody can steal from your property or break in before there's a notification. Peoples' faces are hardly decernable enough in the majority of recordings to prosecute if needed. Disappointed. If you don't buy a subscription the cameras and app are virtually useless.