Foreign Cards: Where They Work and Where They Get Blocked

Swiping a physical card in shops generally works. Where it tends to get blocked: app sign-ups, mobile/easy payment, transit, KTX ticket machines, and some small shops. Carrying cash plus two cards is the safe approach.

Generally works

Physical card payments at shops, restaurants, and convenience stores

Often blocked

KakaoPay and Naver Pay require an Alien Registration Card and a Korean bank account. App sign-up requires verification with a Korean phone number

Shop circumstances

Some shops refuse foreign cards because of fees, or have terminal connection errors

Apple Pay

Merchant support is uneven, and it doesn't work in many places

Statistics

Of the inconveniences foreigners reported, sign-up/verification was 13.1% and payment methods 11.5% (Yanolja Research, analysis of Reddit posts 2023–2025)

Whether a payment is approved varies by card issuer, shop, and timing. Don't rely on a single payment method.