Flint plans to put the new capital to use by (1) adding new talent, (2) boosting customer acquisition efforts, and (3) accelerating R&D in the mobile payments space. Co-founder and CEO Greg Goldfarb said that Flint will remain “focused on empowering the ‘non-countertop’ businesses that operate outside of store (environment) and have different requirements (from traditional retail).”

Today’s announcement comes on the heels of news that Flint was releasing its Android app, and that the company had swapped out its card reader for a camera, as well. Goldfarb also noted that Flint had experienced transaction volume growth of more than 10x in less than year.

From some perspectives, Digicel Group may seem like an unlikely source of capital for Flint. Digicel is not especially active when it comes to funding startups, and has a role of its own as a global communications provider in more than 30 markets. That said, Digicel considers Flint to provide the kind of “pure digital app model” that represents an “inevitable market shift” in the way payments will be made in the future.

Founded in April 2011, Flint demoed its technology as part of the FinovateSpring 2012 show in San Francisco. See the company’s presentation here.