Startup profile · funding coverage
UnifyID funding, valuation and investors
Behavioral biometrics for implicit phone authentication; acquired by Prove in 2021.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series A
$20M · August 2017
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$20M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
acquired
acquired · San Francisco, California
Overview
UnifyID built implicit authentication using behavioral biometrics — analyzing how users walk, hold, and interact with their phones to verify identity without passwords or explicit biometrics. Enterprise customers used it for continuous authentication in mobile apps. Founded in San Francisco, the company raised a $20M Series A led by NEA in August 2017 with Andreessen Horowitz participating from seed. Prove (formerly Payfone) acquired UnifyID in June 2021 to integrate behavioral signals into its phone-based identity verification platform.
Why UnifyID is interesting
Used phone sensor patterns (gait, touch) for passwordless auth before passkeys went mainstream — NEA-led Series A and a16z seed preceded a strategic exit to Prove's identity stack.
Product & use cases
UnifyID's SDK collected passive sensor data from smartphones — accelerometer, gyroscope, touch patterns — to build a behavioral profile for continuous authentication. The product targeted banks, fintechs, and enterprise mobile apps seeking frictionless MFA beyond passwords and one-time codes.
- Continuous authentication in mobile banking apps without repeated login prompts
- Fraud detection when device possession alone is insufficient
- Step-up authentication triggered by anomalous behavioral patterns
Key facts
- Series A (Aug 2017): $20M led by NEA; a16z participated from seed — PR Newswire, TechCrunch
- Acquired by Prove (Jun 2021) for behavioral-biometrics authentication — GlobeNewswire
- Founded by John Whaley (Stanford PhD) and team focused on implicit mobile identity
Funding history (newest first)
Investors in our directory
Funds linked from UnifyID's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: UnifyID was early to passive behavioral biometrics on commodity phone sensors — no dedicated hardware required — which lowered deployment friction vs. hardware security keys or dedicated biometric readers.
Behavioral biometrics sat between passwords and hardware keys — strong UX but privacy and false-positive concerns limited adoption. BioCatch and BehavioSec competed for bank fraud budgets; UnifyID pitched continuous mobile auth. The Prove acquisition (2021) consolidated phone-centric identity. Passkeys and platform biometrics (Face ID) since reduced the standalone market for behavioral SDKs, making the exit timing reasonable for investors.
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BehavioSec direct
Behavioral biometrics for web and mobile; similar passive authentication thesis.
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BioCatch direct
Behavioral biometrics focused on fraud detection in financial services; broader enterprise footprint.
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Apple Passkeys / WebAuthn alternative
Industry shift to FIDO passkeys reduced demand for proprietary behavioral stacks post-acquisition.
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Prove direct
Phone-based identity verification; acquired UnifyID to add behavioral signals to its platform.
Notable stories
- UnifyID pitched authentication that 'knows it's you' from how you walk and type — using phone sensors already in every pocket, not new hardware (2017 Series A press).
- Prove acquired UnifyID in June 2021 to combine phone-number verification with passive behavioral signals for enterprise identity (GlobeNewswire).
Industries
Related funding articles
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FAQs about UnifyID
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