Commuters to New York City who hate the wait to buy paper train tickets–whether from a man or a machine–will soon have the option to use their mobile phones instead. The Metropolitan Transit Authority Board (MTA) has approved a contract with a provider of mobile ticketing technology, London-based tech venture Masabi (a subsidiary of Blue Technologies Ltd).

https://blogs.wsj.com/venturecapital/2014/05/01/nyc-commuters-to-use-mobile-phones-as-train-tickets/