Google Wallet is a mobile payment system that allows users to store debit/credit cards and loyalty cards to make contactless payments through NFC. It was first released in the US in 2011. Google Wallet partners with many major merchants and works with over 300,000 payment terminals. While it initially only supported a few phone models, Google Wallet now works with popular phones like iPhones, Samsung Galaxy phones, and Google's Nexus devices. Google's business model is to offer sponsored ads to users through the app and make money this way rather than charging users or merchants fees.