Tokyo uses both Suica and Pasmo, and for the average traveler in 2026, they are functionally identical and completely interchangeable. Suica is issued by JR East (the railway company), while Pasmo is issued by a consortium of private subways and bus companies. You can use a Suica card on a Pasmo-branded bus, and you can use a Pasmo card on a JR train; both are "tapped" at the same gates. In 2026, the primary choice for tourists is usually the Welcome Suica or the Pasmo Passport, which are special versions designed for visitors that do not require a deposit and feature cute designs (like Hello Kitty or cherry blossoms). These tourist cards are valid for 28 days and can be purchased at Haneda and Narita airports. Furthermore, most travelers now skip physical cards entirely and simply add a digital Suica or Pasmo to their Apple Wallet or Google Pay on their smartphone. This allows you to "tap-and-go" at nearly every train station, bus, and vending machine in Tokyo, as well as at convenience stores like 7-Eleven, making it the most essential tool for navigating Japan's capital.