In 2026, you cannot simply "tap" a standard Suica or Pasmo card at the gate to pay for a Shinkansen (bullet train) journey like you would for a local subway. The Shinkansen requires a separate "Limited Express" fare that the basic Suica balance cannot cover automatically. However, there is a supportive and high-tech workaround called "Shinkansen e-Ticket". You can book your ticket online via the JR-East or SmartEX website and link it to your Suica card's ID number. Once linked, you can tap your Suica at the Shinkansen gates to "verify" your digital ticket and board seamlessly. A grounded reality check: for most international travelers, it is often more supportive to use the Welcome Suica Mobile app or Apple Wallet Suica, which allows for easier digital top-ups. If you haven't pre-booked, you must still use a ticket machine or visit a "Midori no Madoguchi" (Ticket Office) to buy a physical ticket using your Suica balance or credit card, ensuring you have the mandatory "Base Fare" and "Limited Express" components for your high-speed trip.