Shipping giant UPS has studied RFID for a number of years, yet hasn't adopted the technology for its world-wide operation. The company delivered some 3.4 billion packages and documents last year.

"RFID hasn't been adopted for widespread use, but we do have pilots currently underway," said Donna Barrett, UPS' technology public relations manager from the company's Atlanta, Georgia office. One of the pilots is taking place at Worldport, UPS's four million square-foot facility at Louisville, Kentucky, which serves as the company's main air hub.