Intelligent label chip manufacture. Technician checking a polymer transistor (on screen upper right). This is a component of a radio frequency identification (RFID) chip. These chips could soon replace barcodes. They consist of a plastic circuit printed onto foil and antennae for receiving and transmitting radio waves. Plastic circuits are cheaper than silicone, although at the moment they are also slower and store less data. While barcodes can only store price, these chips could be incorporated into packaging to give expiry date and other information. They could also be used in the supply chain to track products and as a security device.