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Korean ID verification (본인인증), explained

The ID check behind most Korean signups, and why foreigners get stuck on it. · 본인인증

When you sign up for a Korean ticket site, delivery app, or store, you may reach a screen that asks for your name and a code sent to a Korean phone. That is 본인인증 (bon-in-injeung), an identity check used at sign-up or checkout.

What it actually checks

본인인증 asks a phone carrier, bank, or identity provider to match the details you enter with its records. The available method depends on the service:

  • Phone check. This is the most common one. You type your name, your resident or foreigner ID number, your carrier, and your phone number. The carrier matches them and texts you a code. You need a Korean mobile line in your own name (see the Korean phone number step).
  • I-PIN. This is an older ID system. For foreigners it usually only works if you already hold a Korean 외국인등록번호 (Alien Registration Number), so it does nothing for a short-term visitor.
  • Card or bank check. Some sites offer this, but they usually want a Korean card or account.

The check is not necessarily a nationality rule. It asks whether your name, number, and identity record match. A short-term visitor usually has no Korean carrier or resident record for the service to check.

Who gets stuck

  • Visitors and tourists: usually cannot pass the domestic check. With no Korean phone line or residence card, there may be no record to match.
  • Residents with an ARC: you can often get through, but only once your ARC is tied to a Korean mobile line in your own name. Until then, you are stuck like a tourist.

How to get through it

  1. Use the global or English version if there is one. Some services replace 본인인증 with a passport name and email signup. Try this first, but check whether it carries the event, restaurant, or product you need.
  2. Get a Korean line in your own name (residents) so the phone check works. This is the lasting fix if you are staying.
  3. Ask someone with a verified account to complete the task. When there is no global version, a Korean friend you trust or Toyoni may be able to book, order, or pay on a verified account.

In short, use the global version when it covers your task. Residents may be able to pass the domestic check once their records match. Otherwise, the service page explains whether someone with a verified account can complete the task for you.

Services where this comes up

Baemin (배달의민족) Baemin's normal signup asks you to verify your ID with a Korean phone number (본인인증), which tourists do not have. But you can place a normal order through Baemin Global without it. Bunjang (번개장터) Local Bunjang lets foreigners join only after 본인인증, where Korea checks your real ID through a Korean phone or Toss. Tourists with no ARC can't do it, and many residents' checks still fail. CatchTable The original Korean CatchTable app asks for 휴대전화번호 본인인증 (Korea checks your real ID through a Korean phone) to sign up. With no Korean carrier line, sign-up won't go through. Coupang Coupang lets you browse and type in a delivery address. But to pay, Korea checks your real ID through a Korean phone in your own name, and a foreign card does not always work. Coupang Eats You can read Coupang Eats in English, but signup and checkout ask for 본인인증 (a Korean phone number and an ID check), and the payment step often turns down foreign cards. Daangn / Karrot (당근) Daangn lets you look around, but to chat or buy it asks for a Korean phone check in your own name plus a verified GPS neighborhood. Tourists and overseas buyers usually cannot give it. Interpark / NOL Tickets To book on the Korean Interpark/NOL site, Korea checks your real ID by phone or I-PIN. Most foreigners can't pass it. Kakao T Kakao T signup asks you to verify your phone and ID. That usually means a Korean mobile number in your own name, which most visitors don't have. Korail / KTX You can book a normal KTX ticket on the Global site, but member-only fares, holiday presales, and KorailTalk membership make Korea check your real ID with a phone in your Korean name and Korean-card fields you don't have. Korean bank account (Toss / KakaoBank) KakaoBank's signup is built for Korean citizens and won't take foreigner IDs. Toss Bank lets a registered foreigner open online, but only with an ARC (외국인등록증) and an ID check. Tourists can't open a normal account at either one. Korean SIM & phone number A tourist prepaid SIM or eSIM gives you data, but it can't prove who you are to Korean apps (본인인증), and calls and texts only work after a passport check at an airport carrier counter. Melon Ticket Korean Melon Ticket only lets you book after Korea checks your real ID (by phone or I-PIN). Tourists can't pass it, and even residents need a Korean phone line tied to their ARC. Musinsa To buy on the Korean musinsa.com you need a one-time 본인인증 tied to a Korean phone in your own name, and checkout wants Korean-only payment. So tourists and many residents cannot finish an order. Olive Young Olive Young's Korean app and site need a CJ ONE membership. To sign up, Korea checks your real ID: a Korean phone in your own name or a Korea-issued ID. Tourists can't do that. Tabling To sign up and book, Tabling wants a Korean phone number tied to a Korean ID check, and it sends your turn alert over KakaoTalk, so a foreign SIM never gets the alert. YES24 Ticket The Korean YES24 site checks your real ID before you can book, and the phone/I-PIN steps need a Korean number or ARC you may not have. Yogiyo Yogiyo asks first-time members to prove their ID once with 본인인증 (an ARC plus a Korean phone in the same name, no prepaid SIMs), and its checkout turns away most foreign cards.

Other reasons you get stuck

Why Korean apps ask for a phone number in your name Many Korean apps send a code to a Korean phone line registered in your name. Tourist SIMs often fail this step. Here is why. Korean payments: why your Visa keeps getting rejected 3D Secure, UnionPay vs Visa, KakaoPay timeouts, and checkouts that only take Korean cards: the part that breaks last.