A system for managing and securing product and deterring theft in a retail setting that resides either on a standard retailer shelf or may be a stand-alone system. The system includes shelves, product dividers and front retaining walls of a height and position to inhibit access to displayed products. Individual taller retaining tabs may be added in front of taller product to inhibit access. Rigid or moveable barriers may be positioned above retaining walls to further restrict access. With the invention, the “sweeping” of numerous products by a thief is deterred. An alert device may be configured to detect and monitor movement of the moveable barriers and to provide an alert signal corresponding to the management of product or to a potential theft situation. The alert device may communicate with a security camera to monitor the vicinity and provide a notification to store computer, pager, cellular telephone, or the like.