Google Wallet is a secure virtual wallet where you can use your phone as your wallet while in-store shopping or online. Basically your credit card is linked with your mobile phone and the details are store in cloud. Google Wallet is based on Near Field Communication(NFC) Technology. NFC is a technology for smartphones. NFC Technology can be used in wireless payment systems.
Google, available on Sprint®. You can tap and pay using Google Wallet anywhere MasterCard® PayPass™ is accepted. Currently, MasterCard PayPass is available at over 140,000 merchants across the United States. Check out the above video which explains Google Wallet in Simple Terms.
Near Field Communications Explained in Simple Terms