> but since email addresses have to be roman characters, it's actually a pain for non-english speakers. Er, no, not at all (well, possibly for the very old?).

> but since email addresses have to be roman characters, it's actually a pain for non-english speakers. Er, no, not at all (well, possibly for the very old?). Roman characters are everywhere in Japan, no-one has any problem dealing with them (pronouncing the words they form? different story). It's more that exchanging contact details is a lot more work in Japan - number, mail address, name in kanji, name readings (yes, you need these, even if you're Japanese/a native level speaker). Mail addresses are frequently really long and sprinkled with non-alphanumerics. Name kanji are a pain too - there's lots of homophones, so if someone tells you their name you often need to check with them which kanji it is. Basically: it's almost impossible to convey your contact details verbally, so without IR, you usually wind up just swapping phones for a few minutes (luckily, in Japan you can be pretty carefree about handing your multiple-hundred-dollar phone to a stranger). Contrast with the situation until recently in the west, where it was usually just a person's name (that you probably knew how to spell already) and a number, and you can kind of see how IR would be a big deal in Japan and not elsewhere. iPhones have seriously broken contact exchange for young people in Japan, since almost everyone has one, and thus no-one has IR anymore. There's probably money to be made fixing it but so far the only solution I've seen other people actually have on their phones is Bump, and it's never really worked well for me.