Already accounts for 15 per cent of the total digital coupon market.
ARCchart says digital coupons represent the fastest growing segment of the coupon industry, and accounted for ten per cent of all coupons redeemed in 2010, up from one per cent in 2006.
It reckons that market hit $5 billion in 2011, with mobile accounting for 15 per cent of it. Now, it says continuing growth will cause the market to accrue revenues of $9 billion by 2016.
ARCchart says the expansion will come via aggregator services such as Groupon or LivingSocial, and via brand-specific loyalty sites designed, built and distributed by the brands themselves.
Of course, the tech and channels used to deliver mobile coupons wary wildly
On the one hand, phones can become scanners, enabling coupon to be delivered via QR codes or NFC.
On the other, phones can themselves act as repositories for coupons by displaying numeric codes or barcodes on the screen, delivered by MMS etc.
Either way, the market is attracting waves of activity from major multinationals such as PayPal, Starbucks and Google as well as newer tech firms including Foursquare and Groupon.