A smartphone app from Google that enables users to pay for merchandise at retail outlets with their mobile phones. Launched in 2011 with support for MasterCard's PayPass system, Visa and Discover were added a year later. Google Wallet also supports loyalty and gift cards as well as payments between individuals via Gmail (see p2p payments).Near Field Communication Was a PrerequisiteRequiring an NFC-equipped Android phone to make a payment by placing it near a terminal, that prerequisite was dropped in 2013 when Google Wallet became available for non-NFC iPhones (Apple later added NFC). See smartphone wallet and NFC.Google Wallet and Android PayIn 2015, Google introduced the Android Pay mobile payment system built into Version 6 of the Android OS (Android M). In 2018, Google Wallet and Android Pay merged (see Google Pay).