[brigandish]

I live in Japan (as does Kalzameus), my name will regularly cause problems in computer systems. In fact, quite often I'm not using my name but what I am called in Japanese, and even then it will often fail. Number 1 problem - not enough characters, because most Japanese people only use a few characters for their entire name, don't have middle names, and don't have spaces in their names. And that's just for starters. Should I use what I consider to be my name, my full name, the name on my passport or the name on my residence card…?

It's just not that hard to find problems with name inputs.

[qingcharles]

Do you have to enter your name in Romaji or Katakana in Japanese sites?

[brigandish]

It depends but it's usually going to be katakana. Sometimes it would specify what's written on your passport, or residence card. I've even heard talk of using half-width characters, which, luckily, I've not had the misfortune to use yet.