US Patent 8235222 Product securement and management system

A system for detecting the potential theft of product from a display shelf may comprise: at least one shelf for containing product, a barrier, and an alert device. The barrier may be movable between a closed position and an open position. The alert device may be operatively connected to the barrier by an air switch and a pressurized pneumatic tube connected to the air switch and located adjacent to the first end of the barrier, wherein the alert device detects movement of the barrier and provides an alert indicative of a potential theft of product from the shelf. When the barrier moves from the closed position to the open position, the barrier may engage the pneumatic tubing, thereby compressing the pneumatic tubing, activating the air switch, and sending a signal to the alert device.