MagentaCandle
Skilled Investigator
RFID employs a numbering scheme called EPC (for "electronic product code") which can provide a unique ID for any physical object in the world. The EPC is intended to replace the UPC bar code used on products today.
Unlike the bar code, however, the EPC goes beyond identifying product categories--it actually assigns a unique number to every single item that rolls off a manufacturing line. For example, each pack of cigarettes, individual can of soda, light bulb or package of razor blades produced would be uniquely identifiable through its own EPC number.
Once assigned, this number is transmitted by a radio frequency ID tag (RFID) in or on the product. These tiny tags, predicted by some to cost less than 1 cent each, are "somewhere between the size of a grain of sand and a speck of dust." They are to be built directly into food, clothes, drugs, or auto-parts during the manufacturing process.
Receiver or reader devices are used to pick up the signal transmitted by the RFID tag. Proponents envision a pervasive global network of millions of receivers along the entire supply chain -- in airports, seaports, highways, distribution centers, warehouses, retail stores, and in the home. This would allow for seamless, continuous identification and tracking of physical items as they move from one place to another, enabling companies to determine the whereabouts of all their products at all times.
Unlike the bar code, however, the EPC goes beyond identifying product categories--it actually assigns a unique number to every single item that rolls off a manufacturing line. For example, each pack of cigarettes, individual can of soda, light bulb or package of razor blades produced would be uniquely identifiable through its own EPC number.
Once assigned, this number is transmitted by a radio frequency ID tag (RFID) in or on the product. These tiny tags, predicted by some to cost less than 1 cent each, are "somewhere between the size of a grain of sand and a speck of dust." They are to be built directly into food, clothes, drugs, or auto-parts during the manufacturing process.
Receiver or reader devices are used to pick up the signal transmitted by the RFID tag. Proponents envision a pervasive global network of millions of receivers along the entire supply chain -- in airports, seaports, highways, distribution centers, warehouses, retail stores, and in the home. This would allow for seamless, continuous identification and tracking of physical items as they move from one place to another, enabling companies to determine the whereabouts of all their products at all times.