Item-level radio frequency identification (RFID) using standard Electronic Product Codes (EPCs) is rapidly becoming a key factor in improving retail inventory management. The main driver for adoption is quite simple - taking inventory with RFID is 25 times faster than with bar codes. As major retailers like Walmart, J. C. Penney, and Macy's roll out item-level RFID, brand owners must find a low-cost, reliable way to implement serialization.