au PAY is KDDI’s mobile payment service, and the official site says it can be used by people who are not au mobile subscribers. Users add funds to an au PAY balance in the app and pay by code in stores, online, or for bills. The service also lists QUICPay+ through Apple Pay and a contactless au PAY prepaid card. Payments earn Ponta points, while the site offers merchant search, top-up instructions, user guides, campaigns, and notices. It also provides balance and transaction-history access, FAQs, terms, customer support, and information for merchants considering acceptance.