“You may use credit cards to buy commuter passes and the Tokyo Subway Ticket*, which is a special ticket for travelers.”
* Eligible customers
(1) Foreign travelers visiting Japan
(2) Customers that have traveled from a station between Atami Station and Hakata Station to Tokyo Station or Shinagawa Station, using “Express Reservation” or “SmartEX,” which are members-only online reservation services for the Tokaido-Sanyo Shinkansen.
Customers that are registered for these services may buy the Tokyo Subway Ticket at select commuter pass ticket counters.