A guard is supposed to watch 100,000 square feet of storage and operations as well as monitor who enters and exits the property. He has to tour on foot around the premises. The thieves watch him begin his tour and head towards the area he has just left. Rain, snow, darkness — all these things affect him and his ability to watch a video monitor. Given that he is human, he has to visit the rest room at times. Some days he may be out sick. Video Analytic software can watch all 100,000 square feet at once without ever blinking an eye.