Mobile credit card payment processing apps for Android include PayPal, Square, SumUp, QuickBooks and Shopify, offering varied fees, hardware and features.

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Google is working with Citigroup and and MasterCard to develop a mobile purchasing system for Android smartphones. This would allow users to make purchases by simply waving their devices at a checkout ...

American Express has just served up its take on the mobile digital payment space by way of an iOS and Android app simply called – Serve. The mobile app is part of American Express’ digital payment and ...