... 5.WE-003 plays an important role in security when there are no security suards or they are goof off.6.One ... main host computer can monitor 4-32 walk through metal detectors. (No ... :Airports, Stations, Dock, Gyms, Customs, Banks, Exhibition Halls, Public security, Frontier defense, Embassies , Shopping centers, Schools, Jailhouses, Entertainment environments, ...