Google Wallet is a p2p payments service from Google Inc., that allows people to send and receive money from a mobile device or desktop computer. Every Google Wallet account is linked to an existing debit card or bank account. A Google Wallet includes the Google Wallet app and the Google Wallet Card. The app is available for Android devices running Android 4.0 and above, and for iOS devices running iOS 7.0 and above. The physical Google Wallet Card is an optional addition to the app, which allows users to make purchases at point-of-sale (in stores or online) with the money in their account. You can also use the card to withdraw cash at ATMs.