The most popular and widely recognized IC card in Japan is the Suica card, issued by JR East. While originally intended for the Greater Tokyo area, Suica is now part of the "Nationwide Mutual Usage Service," meaning it is accepted on almost all major trains, subways, and buses throughout Japan, from Hokkaido to Kyushu. Its mascot, a cute penguin, is an iconic sight at ticket gates. Its closest rival is the PASMO card, which is equally popular in Tokyo and used by private railway and subway companies. In 2026, the physical versions of these cards are becoming rarer for tourists due to chip shortages, leading to the massive popularity of Mobile Suica and Mobile PASMO on Apple Wallet and Google Pay. Other regional cards like ICOCA (JR West/Osaka) and SUGOCA (JR Kyushu) are also popular in their respective areas, but because they are all interchangeable for standard transit and "electronic money" payments at convenience stores and vending machines, Suica remains the "de facto" gold standard for travelers and locals alike.