Privately held Daon came on the market 15 years ago in the aftermath of the September 11, 2001 terrorist attacks, supplying U.S. government agencies and other public sector clients with biometric and other identification software to secure the U.S. and other national borders. Subsequently, as legacy security technologies to combat hackers demonstrated declining effectiveness — in addition to being inconvenient and irritating to legitimate users — Daon started to offer financial services and other private sector industries biometric-based (fingerprint, facial, voice recognition, and more) s...