[soohyung]

You'd be surprised, there are many sites that don't even support names longer than some arbitrary limit like 5 or 10 characters because Korean names are typically 3 to 4 characters long.

The phone number is typically required for real-name verification. Pair that with the low character limit above and a lot of stuff just breaks.

I think non-Korean customers just are not much of a consideration for Korean companies unfortunately.

[cycrutchfield]

It goes both ways. Some US sites don’t allow spaces or hyphens in given names.

[msm_]

Most US websites I deal with throw a random error when I give them my name. And it's not even weird, just one non-ascii character. Especially annoying since they always say something to the effect of "Write your legal name here, exactly as it's on your documents, do check twice it's the same".

I know sometimes it's because of legacy ASCII protocols in finance/airlines (but sometimes it's just bad databases/regexes). I know how to fix it, but please just don't say in the error message that my name is "invalid".