UK retailer Tesco has hooked up with Gillette in an instore pilot of new smart tag technology. Radio frequency identification (RFID) chips are being used in a trial that could lead to the replacement of barcodes. The chips can be read wirelessly by a scanner, facilitating supply chain management. Staff can use the chips to monitor stock levels, sell-by dates and purchasing history. They will be attached to packs of Mach3 razor blades.