"Phones are used for shopping, for news, but most of all for communication. Social software in the truest sense. The low cost and ubiquity of phones brings wireless technology to all parts of what is, admittedly, already a very egalitarian society. Which is why you hear so little talk of a "digital divide" in Japan. These small computers are very personal indeed: for all the talk we've heard about "wearable" technology, the only technology more wearable than a phone is a chip implant. "