RFID stand for radio frequency identification. Radio frequency identification tags consist of silicon chips and an antenna that can transmit data to a wireless receiver. It is conceiveable that one day technology will allow us to use radio frequency identification to track informmation in our daily lives, from what we drink to auto-id. Custom RFID tags are now available from www.buyrfid.com. The RFID tags can be attached to or embedded in products, boxes, pallets, trays, and numerous other items. Prices start at around $.65 per tag based on quantity.