What is the difference between RFID/EPC tags and bar codes?
A. RFID/EPC tags and bar codes are two different technologies that overlap in the identification of products. Bar codes require line-of-sight to identify a product. RFID does not require the tags to be within line-of-sight. Bar codes typically identify the UPC (representing a unique style, color and size of the product), while an RFID/EPC tag contains the UPC plus a serial number which differentiates one like item from another. RFID usability is often limited by products containing metal and water, an attribute not shared by bar codes.
