From Mashable: If you accept credit cards now you should upgrade to mobile payments.
Purchases made using a smartphone or tablet rose 48% year-over-year to $8 billion during the second quarter of 2014. That growth is 3x that of desktop ecommerce, and it’s the swiftest increase in mobile spending since Q1 of 2012. By 2020, mobile commerce will account for more than 75% of the world’s online transactions, and more than 50% of spend.
In other words, mobile payments are hot.
via Death of the Wallet?.