Several global airlines have fully implemented RFID (Radio Frequency Identification) technology to track baggage in real-time, but Delta Air Lines was the pioneer and remains the industry leader. Delta uses RFID chips embedded in every luggage tag, allowing passengers to track their bag's location through the Fly Delta app at every step, from the bag drop to the aircraft and onto the carousel. United Airlines, American Airlines, and Southwest have also adopted various levels of RFID and advanced barcode scanning to meet IATA Resolution 753 standards. Internationally, Qatar Airways, Emirates, and Lufthansa utilize RFID at their major hubs to minimize mishandled luggage. This technology is superior to traditional barcodes because it doesn't require a direct line of sight; sensors can read dozens of tags simultaneously as a baggage cart passes by, significantly reducing the "lost bag" rate and providing travelers with much-needed transparency during their journey.