London Underground serves approximately 4.8 million passengers a day. To ensure the escalators on the London Underground system continue to operate safely and reliably, London Underground operates a carefully managed NDT and maintenance routine. But, with over 30,000 individual escalator steps across the network, the challenge of ensuring that each step is tested, repaired when faulty, and then monitored when it is returned to use is a formidable one. To solve the problem, London Underground turned to RFID technology. To help them deliver their project they chose CoreRFID.