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The cumbersome public certificate system that once dominated Korean online banking and government-site logins has been phased out or eased, replaced largely by simple authentication services from Kakao, Naver, and carrier PASS, alongside financial certificates issued by banks. These newer methods verify identity through a phone app, biometric check, or PIN rather than installing dedicated certificate software, making the whole process far less technically painful while still linking back to your Alien Registration Card-based identity.
A paper name-seal alone cannot authenticate anything on a live website, since digital services need an electronic verification method, and logging in with a Google account isn't accepted by Korean government or banking systems, which require domestically recognized identity verification instead.
You'll run into these simple-authentication prompts constantly across Gov24, HomeTax, and virtually every bank's website or app, making setting one up early — ideally right after getting your ARC — one of the more useful small errands for settling in smoothly.
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