Prepaid data card in Narita Airport

Hi

I'm going to Japan In Nov. as I'm traveling myself, I need a data SIM card to navigate.

I understand that Big Camera is selling a 2GB data card. Trying to google for their store location but unable to find one in Narita airport.

Could some one advise whether there is a store in Narita? Or whether there is an alternative store that I can visiti for data sim?

Thank you!

Prepaid data sims can now be purchased at a vending machine at Narita Airport:

http://service.ocn.ne.jp/mobile/one/visitor/en/

You can find cheaper options however if you look online, however they may not be as convenient as the vending machine option.

There is also a link to the vending machine on the Narita Airport web site. Don't just click on the sim link on the main page. You have to search on the term "sim vending machine."

In short, you will get directed to this two page PDF document:

http://www.naa.jp/en/press/pdf/20150717-simhanbai-en.pdf

Payment is by credit card only.

Many other web sites referred to a similar sim vending machine at Haneda's international terminal, but I have yet to find any evidence that it exists. The Haneda official site doesn't mention it.

I used this one last time I went

http://www.so-net.ne.jp/prepaid/en/index.html

Thank u!