While it's tested the idea several times in the past, London's Tube system won't be getting mobile-based payment technology any time soon. Customer Experience Director Shashi Verma told GigaOM that existing NFC technology wasn't able to drop below the 500 millisecond barrier -- something which Transport for London demands from its high-churn Oyster card-based turnstiles. Verma added, "The concerns are only around NFC technology and not EMV. We are keen to see any progress the industry can make in this area
