I have my front camera set at 10 sensitivity, full detection zone, but it will not pick up anyone walking on the sidewalk in front of my house. It will pick up cars driving by, but no people. Lots of people walk on the sidewalk daily because of thr park, but it won't record. My husband had his foglight smashed out where he parks in front of his truck, and the camera didn't pick up anything! It also won't start recording up the center walkway until someone is about halfway up.