In 2026, the primary way to pay for trains in Tokyo is via a contactless IC Card, such as Suica or Pasmo. While physical cards were limited in previous years due to chip shortages, they are now widely available again for tourists in the form of the "Welcome Suica" or "Pasmo Passport." However, the most convenient method for most is Mobile Suica or Mobile Pasmo; you can add these cards directly to your Apple Wallet or Google Pay on your smartphone and "top up" using your credit card instantly. When entering a station, you simply tap your phone or card on the blue sensor at the ticket gate—there is no need to select a destination or buy a paper ticket. The system automatically calculates the fare and deducts it when you tap out at your exit station. These cards are "interoperable," meaning a Suica card works on the Metro, the JR lines, and even buses and vending machines throughout Japan. For those planning to travel extensively within the city over 24-72 hours, a "Tokyo Subway Ticket" can be purchased as a QR code, which may be more cost-effective than using a per-ride IC card.