Each RFID chip is unique just like a barcode. Instead of reading a barcode, you just need to be in the vicintiy of the RFID chip to get a readout on the handheld transceiver. Your transceiver will then have all of the information on the item.
"Our solution marks materials with an electronic RFID tag, which can be quickly located by project / construction personnel, substantially reducing the time and cost associated with knowing what materials are currently on hand. Locating materials in the lay down yard is reduced from hours to minutes, which reduces labor costs and reduces personnel safety risks. Our solution provides visibility of the material's complete genealogy throughout the supply chain, providing traceability from the mill to the construction site, including all of the material's quality certifications. By reducing costs, increasing compliance, and eliminating unnecessary delays, construction projects can reap significant benefits from our solution."