MassMutual Ventures, Synchrony and Blue Venture Fund all returned as the user authentication platform developer almost doubled its overall funding.

US-based customer identification technology developer Payfone has collected $100m in funding from investors including financial services provider Synchrony Financial and insurance providers Blue Cross Blue Shield Association and Massachusetts Mutual Life Insurance. The round was led by funds advised by Apax Digital, the growth equity arm of private equity firm Apax Partners, and included Sandbox…

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