In 2026, the choice between Suica and PASMO is largely a matter of aesthetics or which station you happen to be at first, as they are functionally identical and fully interchangeable across Japan. Suica is issued by JR East, while PASMO is issued by non-JR rail and bus companies. Both can be used for trains, subways, buses, and even as e-money at convenience stores and vending machines. For tourists, the main difference is the "Welcome Suica" (red) and "PASMO Passport" (Hello Kitty-themed) versions, which have no deposit and expire after 28 days. If you use an iPhone, you can easily add a digital version of either to your Apple Wallet for free. The only real advantage to one over the other is the specific souvenir design; otherwise, you can simply grab whichever one is available at your arrival airport (Narita or Haneda) and enjoy seamless travel.