Product display tray systems are provided and disclosed in which a vertical divider assembly or smart divider is used to create product row display areas and tray compartments and to detect the existence or nonexistence of products in the tray. Product compartments may be formed to hold products therein. Motorized smart dividers are also provided which contain mechanisms that automatically shift compartments or products forward after a product has been removed from the foremost position. Sensors are used to detect the presence or absence of products in order to activate the forward movement of the compartments or products and/or to provide information for sales and inventory reports.
