RFID is a proven technology that's been around since at least the 1970s. However, it's been too expensive and too limited to be practical for many commercial applications until recent years. Now that the costs associated with making tags have decreased, RFID tags can solve many of the problems associated with manufacturing and the supply chain. The tags can be embedded or encased in packaging for weather-proofing and greater durability. Tags also have microchips that can store a unique serial number for every product manufactured around the world.