Square now in Japan
squareup.com
squareup.com
Transforming your iPad/iPhone into a register is also pretty neat. I wonder if they'll look into putting an NFC reader in there and interface with all the IC cards here. Most people don't pay for their coffee by credit card.
We run a casual, low-pressure mixer kind of event about once a month. If you come to Japan, you can follow our blog (http://www.makeleaps.jp/blog/en/) or signup on Doorkeeper to get notified of events. We get lots of visitors from abroad swinging through and we're always looking to help support other startups in Japan or small businesses trying to enter the market here. It's a really good crowd of people.
There's also a meetup for HN readers in the kansai area of Japan if you're visiting there.
There have are some Japanese startups, such as Coiney (http://coiney.com/) who are already doing the same thing as Square.
I'd prefer to see Square be able to work with Suica, Pasmo, and all the other common ways that people actually pay for things here in Japan (besides cash of course)
I remember in the past making a $6,000 bank transfers by going to the convenience store ATM taking out money and going to the bank ATM. I don't know anywhere else in the world where I would feel safe doing that.
There is also a lot of electronic money usage. Many people carry hundreds of dollars on their rail cards.
Credit cards are considered risky in Japan. My understanding is that chargebacks are not enshrined in law so its not guaranteed and whether it is or not most people presume they will have to pay if their credit card is fraudulently charged.
Convenience store payments are also popular because they are low risk and convenient.
Also Square? https://divoqsdr0fzyc.cloudfront.net/assets/core-f5784136cd1...
Are confusing Square with Stripe? If so I am in the beta and its brilliant. You can get in the beta by emailing them.