An RFID enabled paper roll includes a tubular core, a paper stock wound around the core, and a radio frequency integrated circuit electrically coupled to an antenna and positioned on the core. A system for reading a radio frequency integrated circuit positioned on an item of inventory in a warehouse...http://www.google.com.hk/patents/US7151979?utm_source=gb-gplus-share專利 US7151979 - System and method for tracking inventory
