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One of the country's largest train operators has teamed with Hitachi to sell data based on the NFC train passes
Suica, a Japanese train pass system based on NFC, has over 40 million users. Train operator JR East has started selling anonymized history data from the passes to businesses, although many commuters object.
The website for JR East's Suica e-payment system, now at the center of a debate about data privacy in the country.
A passenger uses a touch card to enter a train station in Osaka, Japan. The touch cards have recently become the subject of a debate about data privacy in the country.