Google Wallet is a mobile payment system that allows users to store debit, credit, loyalty and gift cards on their mobile phone. It uses Near Field Communication (NFC) technology to make secure payments simply by tapping the phone on a PayPass-enabled terminal. Google Wallet stores encrypted versions of payment cards on secure servers and transmits only what is needed for each transaction, keeping users' actual card details private. The app provides a fast, convenient way to pay that saves users from carrying multiple physical cards and takes advantage of digital coupons and deals.