Smarter Security is proud to introduce Door Detective SG, the physical firewall for your facilities. Our newest high-assurance method of entry protection is a discrete door-mounted device that monitors authorized and unauthorized traffic through your most valuable and highest access points. The Door Detective SG features new Sidegating technology that enables the detection of not just tailgating but also side-by-side collusion in single and double-door entries. Go beyond a lock and add awareness to your access control by securing an open door with the new Door Detective® SG.