Digital identity authentication provider Payfone closed a $24 million funding round today. Credit reporting agency TransUnion led the round, while existing investors Synchrony, MassMutual Ventures, and Wellington Management also contributed. The investment brings the New York-based company’s total funding to $117.6 million.

TransUnion’s investment comes in conjunction with a strategic partnership between the two companies, which have been doing business together since 2017. The Chicago-based company will integrate Payfone’s Trust Platform and Trust Score into its IDVision with iovation suite of products.

“Within this new strategic partnership, we anticipate supporting Payfone’s expansion to new markets and looking at other uses of their products throughout our organization,” said Geoff Miller, senior vice president of global fraud and identity solutions at TransUnion. “We are both committed to protecting consumers, focusing on data privacy and building trust with our customers, and the combination of our solutions will create a better, more seamless experience for everyone.” Miller will join Payfone’s Board of Directors.

TransUnion will serve as Payfone’s primary partner for regulated identity verification information. Payfone CEO Rodger Desai said, “With our partnership with TransUnion, we can now leverage TransUnion’s footprint of more than 30 countries to help expand our Trust Score around the globe, allowing billions of additional consumers to safely access digital services.”

Payfone, which was founded in 2008 as a mobile payments company, demoed1-Touch Checkout at FinovateFall 2012. The New York-based company has since pivoted to focus on authentication solutions.

Last year, Payfone authenticated 20 billion transactions for Fortune 500 companies using its zero-knowledge architecture (if you’re unsure what zero-knowledge is, check out Payfone’s blog post on the matter). The company plans to double the number of transactions authenticated this year.

Founded in 1968, TransUnion has office locations at its headquarters in Chicago, as well as in Hong Kong, Mumbai, Toronto, Johannesburg, Colombia, and Brazil. At FinovateFall 2016, TransUnion showcased Prama, a suite of analytics tools that helps lenders gain market intelligence and acts on insights to drive growth and build a risk policy. TransUnion is a public company with a market capitalization of $13.3 billion, trading on the NYSE under the ticker “TRU.”