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Card reader? No

Wallet? Yes

How wallet works: Near field communication (NFC)

What's in the wallet: Citibank MasterCard, Google prepaid card

Who takes it? 25 national retailers (Peet's, Gap, Duane Reade, Foot Locker, Macy's) and MasterCard PayPass merchants

Launch date: 9/2011

@FortuneMagazine - Last updated July 10 2012: 10:51 AM ET
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