Mobile payments — the use of phones to complete transactions in stores instead of cash and physical card swipes — are going to grow much more quickly than many observers believe. In no small part, this will be thanks to the growing popularity of Apple's new Apple Pay system.  In a new in-depth report on mobile payments from BI Intelligence, we explain how a few US retailers account for the vast majority of over $4.7 trillion in aggregate payment volume. Many of these retailers have already adopted the technology necessary to accept mobile payments from Apple Pay and similar apps, or plan to. It only takes a handful of these large retailers to drive an explosion in mobile payment volume and that's precisely what we think is going to happen. 

http://uk.businessinsider.com/mobile-payments-will-see-apple-pay-boost-2015-1?r=US