EPC Network is an architecture similar to the internet designed to store and allow access to data related to EPC. For example, detailed item information such as description, ingredients, size, weight, cost; manufacturing information about the specific lot such as when and where it was produced and expiration dates; and distribution information about where it has been including addresses, dates and times. The data could be as detailed as including environmental factors such as temperatures during manufacturing or storage. This data flexibility is accomplished through the use of a new computer language called Physical Markup Language (PML) which is essentially a variation of the more commonly known Extensible Markup Language (XML).
The EPC RFID tag is attached to a pallet, case, or item. Using a reader, a tag communicates its EPC number to a reader. The reader then passes the number to a computer or local application system, known as the Object Name Service (ONS). ONS tells the computer systems where to locate information on the network about the object carrying an EPC, such as when the item was produced.