a system for enhanced substantially simultaneously monitoring multiple aggregated rfid - tagged products comprising an rfid reader disposed remote from said aggregated rfid - tagged products and a supplemental antenna disposed intermediate the rfid reader and the rfid - tagged products . the supplemental antenna includes at least a portion thereof in substantially non - interrupted communication with multiple ones of the rfid tags associated with the rfid - tagged products and at least a portion thereof being in substantially non - interrupted communication with said antenna associated with said rfid reader , whereby said supplemental antenna enhances the transmission of coded information between the reader and the rfid tags associated with the rfid tagged products . a slip sheet having a supplemental antennas associated therewith is disclosed .