In Japan, they're already using contactless payment methods, so you know it was just a matter of time before the technology spread. Now selected customers of the Metropolitan Transportation Authority will be able to pay for a ride at the subway entrance by tapping or waving a payment card at a turnstile reader.
Citigroup has teamed with MasterCard, which has installed its PayPass tag readers in some stations. The readers display a logo so people know which turnstiles accept their cards, embedded with radio frequency identification, or RFID, chips instead of a magnetic stripe.
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