John Adams

Hong Kong's status as an iconic financial capital stands in contrast to its relatively lackluster record for technology. The city is regarded as below average as a hub for startups, and MasterCard places Hong Kong in the middle of the pack for mobile payments readiness.

Financial institutions that are considering technology to power digital and mobile payments have an unconventional choice—the underlying blockchain structure that enables bitcoin to hasten execution and cut costs.

Ericksen is one of the "EMV people," part of the card network-driven push to get the entire globe dipping instead of swiping.

Ann Cairns, president of international markets for MasterCard, helps guide initiatives such as financial inclusion and other international initiatives. The rapid uptake of payments technology is challenging MasterCard to create an attractive experience that goes beyond payments.

In addition to battling crime, bankers face a more competitive market filled with well-funded bank alternatives, putting Bank of America Merrill Lynch's Stephanie Wolf on the spot to play offense and defense for one of the world's largest financial institutions.

McNamara has been recognized in prior years as one of PaymentsSource's Most Influential Women in Payments, partly on the influence of her organization, Citi Retail Services, which accounts for a huge portion of Citi's overall business.

There's a cultural shift that's necessary for some companies, Manus said, noting that for many organizations, past success is the biggest threat to a healthy future.

'Fast' may not be the first word that comes to mind when describing her four-year journey to win over the country's largest banks, but for Jan Estep, it's a testament to the perseverance and negotiating prowess necessary to achieve a breakthrough in payments efficiency.

Still uncertain about EMV? You've got good company in MagTek's CEO and chairman, Annmarie "Mimi" Hart.

A consortium of Swiss banks hope the country's reputation for banking, technology and smartphones will give its financial institutions a commanding position for in-store and in-app payments.