Diana Goovaerts from WirelessWeek offers an opinion –

The expansion of mobile payment systems like Apple Pay and Samsung Pay will spur massive 37.8 percent year-over-year growth in worldwide mobile payment market revenues in 2016, according to a new TrendForce report.

This year, total revenue from mobile payment systems is expected to hit a whopping $620 billion, up from $450 billion in 2015, the report said. Mobile Payment revenues are expected to reach $1.08 trillion by 2019 despite a projected decrease in year over year growth, according to the TrendForce forecast.”

Read the rest of the story here – http://www.wirelessweek.com/news/2016/02/trendforce-mobile-payment-revenues-hit-620b-2016

I’m not entirely sure how that math works out – a projected decrease in Y over Y growth is going to lead to such a sharp increase in overall totals.