Long a laggard in the adoption of mobile payments, the U.S. is catching up with the leaders and is now home to some of the world's biggest m-payments companies....
Start-up Clinkle has a service that does not yet exist, but believes it can win the mobile payments race and has just collected $25M from investors....
Punchey has an enormously steep path to climb and ultimately the start-up will fail to convince merchants that its pricing structure is better than Square's....
M-Pesa is blamed for facilitating money laundering and corruption, but the service has done a vast amount of good in poor and troubled places around the world....
The best mobile payments processor for your business may be one you've never heard of... or maybe not - it depends on your volume and types of cards you accept....