According to comments made by Amalgamated Bank Chief Executive Officer Priscilla Sims Brown at the New York Times DealBook conference on Wednesday, the strategy would employ credit card companies to more closely track gun purchases, Bloomberg reports.

"We're at the very early stages of this -- this particular code just got approved in October, so those detection scenarios are still being brought together," said Brown, adding "But as this is implemented, those scenarios will be used."

The strategy would mirror ways banks try to identify and stop fraudsters from using customers' funds. 

The International Organization for Standardization approved a new merchant category code earlier this year that banks will use when processing transactions for gun and ammunition stores after Amalgamated submitted an application on the matter. Gun-control advocates were quick to celebrate the move, arguing it would help banks flag suspicious activity at these retailers. -Bloomberg