

The problem
You need to onboard clients as securely, quickly, and seamlessly as possible, but are up against extensive regulatory requirements.
Our solution
We offer a proprietary solution with bank-grade identification and verification, decreasing friction for your clients.
Applications
Automated onboarding and GDPR-proof biometric verification.
The problem
You need to onboard clients as securely, quickly, and seamlessly as possible, but are up against extensive regulatory requirements.
Our solution
We offer a proprietary solution with bank-grade identification and verification, decreasing friction for your clients.
Applications
Automated onboarding and GDPR-proof biometric verification.
Next-generation fraud detection
Our approach to anti-financial crime is continuous, predictive, and driven by machine learning. We detect and assess financial crime not only at onboarding but throughout the entire lifecycle of a customer.
Having performed millions of KYC onboardings, Fourthline’s anti-financial crime experts have been trained extensively in signaling risk indicators, identifying patterns, and putting insights into action.
Proprietary algorithms and augmented analytics result in pattern recognition that informs decisioning and risk scoring, to identify more legitimate customers and detect fraudsters during onboarding and throughout the customer lifecycle.
Boost conversion
No more delays and drop-offs in conversions. Verify your customer’s address in seconds and boost conversion rates.
Maximise fraud detection
While traditional proof-of-address checks rely on documents that can be falsified, our holistic analysis of geolocation and device intelligence catches fraud that others miss.
Seamless UX
Say goodbye to uploading paper documents. Offer your customers a fully digital PoA check that is performed in seconds.
Next-generation fraud detection
Our approach to anti-financial crime is continuous, predictive, and driven by machine learning. We detect and assess financial crime not only at onboarding but throughout the entire lifecycle of a customer.
Having performed millions of KYC onboardings, Fourthline’s anti-financial crime experts have been trained extensively in signaling risk indicators, identifying patterns, and putting insights into action.
Proprietary algorithms and augmented analytics result in pattern recognition that informs decisioning and risk scoring, to identify more legitimate customers and detect fraudsters during onboarding and throughout the customer lifecycle.
Boost conversion
No more delays and drop-offs in conversions. Verify your customer’s address in seconds and boost conversion rates.
Maximise fraud detection
While traditional proof-of-address checks rely on documents that can be falsified, our holistic analysis of geolocation and device intelligence catches fraud that others miss.
Seamless UX
Say goodbye to uploading paper documents. Offer your customers a fully digital PoA check that is performed in seconds.
How does it work?
How does it work?


1. Address, device metadata, and geolocation are provided
User is asked to share relevant data points such as metadata and geolocation
Check for address accuracy
Crosscheck with geolocation and metadata
100% GDRP compliant
2. Verification if the customer address is residential
3. Address is checked for red flags
1. Address, device metadata, and geolocation are provided
2. Verification if the customer address is residential
3. Address is checked for red flags
Solve your proof of address challenges and partner with Fourthline
99.98%
Fraud detection accuracy
Fourthline detects fraud at a higher accuracy rate than other providers, so you can be confident that you are onboarding trustworthy clients.
99.7 %
Completion rates
Fourthline has helped its clients achieve an overall conversion rate of 99.7% – with only 0.3% failing at the address verification stage.
100 %
AML and GDPR compliance
Our PoA solution is fully compliant with GDPR and AML regulations.
Solve your proof of address challenges and partner with Fourthline
99.98%
Fraud detection accuracy
Fourthline detects fraud at a higher accuracy rate than other providers, so you can be confident that you are onboarding trustworthy clients.
99.7 %
Completion rates
Fourthline has helped its clients achieve an overall conversion rate of 99.7% – with only 0.3% failing at the address verification stage.
100 %
AML and GDPR compliance
Our PoA solution is fully compliant with GDPR and AML regulations.
Want to learn more?
Discover how we can help you solve mission-critical identity challenges in a tailored way.
Want to learn more?
Discover how we can help you solve mission-critical identity challenges in a tailored way.
Solutions
Solutions
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.
Fourthline has been certified by EY CertifyPoint to ISO/IEC27001:2022 with certification number 2021-039.
Copyright © 2026 - Fourthline B.V. - All rights reserved.