Isis is a joint venture between three major wireless carriers to create a mobile payment platform. The open platform allows all issuers and merchants to participate. It uses near field communication (NFC) technology to transmit payment and other information securely between a user's smartphone and a merchant's payment terminal with a simple tap. The Isis Mobile Wallet app stores virtual versions of credit/debit cards, cash cards, loyalty cards, offers and account details on a user's phone for convenient contactless payments and savings.