In May Google announced its mobile wallet, which uses NFC for tap and pay, in collaboration with Citi, MasterCard, Sprint and First Data.
According to a recent blog post, Google is releasing the first version of the app to Sprint, so Google Wallet will be available on Sprint Nexus S 4G phones.
With the app, customers can pay with a Citi MasterCard credit card and the Google Prepaid Card, which can be funded with any of credit cards.
Osama Bedier, Vice President of Payments wrote in a recent blog post that “Visa, Discover and American Express have made available their NFC specifications that could enable their cards to be added to future versions of Google Wallet.
Source: Official Google Blog