Yeo Bokeh

Continuous Human Verification for Security Teams

Don’t Just Report a Breach: Prove Who Saw the Data.

YEO adds an independent out-of-band (OOB) verification channel that confirms the right human is present throughout the session: producing defensible Evidence of Sight for CRB-compliant audit trails.

Two smartphones displaying the YEO secure messaging app interface
Yeo Bokeh

Don’t Just Report a Breach: Prove Who Saw the Data.

YEO adds an independent out-of-band (OOB) verification channel that confirms the right human is present throughout the session: producing defensible Evidence of Sight for CRB-compliant audit trails.

Two smartphones displaying the YEO secure messaging app interface
Yeo Bokeh

Continuous Human Verification for Security Teams

Don’t Just Report a Breach: Prove Who Saw the Data.

YEO adds an independent out-of-band (OOB) verification channel that confirms the right human is present throughout the session: producing defensible Evidence of Sight for CRB-compliant audit trails.

Two smartphones displaying the YEO secure messaging app interface
wired
metro
verdict
evening standard
UKTN
independent
wired
metro
verdict
evening standard
UKTN
independent
wired
metro
verdict
evening standard
UKTN
independent

Authentication is a moment. Recipient integrity must be continuous.

Authentication is a moment. Recipient integrity must be continuous.

Authentication is a moment. Recipient integrity must be continuous.

THE PROBLEM

Why Device-Level MFA Fails the Human Test

Your perimeter is only as secure as the person actually viewing the data at the terminal.

THE PROBLEM

Why Device-Level MFA Fails the Human Test

Your perimeter is only as secure as the person actually viewing the data at the terminal.

THE PROBLEM

Why Device-Level MFA Fails the Human Test

Your perimeter is only as secure as the person actually viewing the data at the terminal.

CRB Regulatory Warning

Regulators no longer accept ‘sent’ as proof. 24-hour filing requirements demand immutable proof of who consumed the data.

The Post-Login Blindspot

Standard MFA stops at the "door." YEO monitors the "room," ensuring the human remains the authorised recipient throughout the session.

In-Band Vulnerability

When primary infrastructure is compromised, "In-Band" tokens (SMS/App push) are equally vulnerable to interception.

The Forensic Deficit

"Successfully Delivered" is not a legal proof of receipt. You need tamper-evident Evidence of Sight for regulatory filing.

CRB Regulatory Warning

Regulators no longer accept ‘sent’ as proof. 24-hour filing requirements demand immutable proof of who consumed the data.

The Post-Login Blindspot

Standard MFA stops at the "door." YEO monitors the "room," ensuring the human remains the authorised recipient throughout the session.

In-Band Vulnerability

When primary infrastructure is compromised, "In-Band" tokens (SMS/App push) are equally vulnerable to interception.

The Forensic Deficit

"Successfully Delivered" is not a legal proof of receipt. You need tamper-evident Evidence of Sight for regulatory filing.

CRB Regulatory Warning

Regulators no longer accept ‘sent’ as proof. 24-hour filing requirements demand immutable proof of who consumed the data.

The Post-Login Blindspot

Standard MFA stops at the "door." YEO monitors the "room," ensuring the human remains the authorised recipient throughout the session.

In-Band Vulnerability

When primary infrastructure is compromised, "In-Band" tokens (SMS/App push) are equally vulnerable to interception.

The Forensic Deficit

"Successfully Delivered" is not a legal proof of receipt. You need tamper-evident Evidence of Sight for regulatory filing.

Compare YEO with Legacy Infrastructure

YEO

Standard MFA

Out-of-Band Architecture

Continuous Biometric Verification

Hardware-Locked Geofencing

CRB-Ready Audit Trails

Deepfake Mitigation

Compare YEO with Legacy Infrastructure

YEO

Standard MFA

Out-of-Band Architecture

Continuous Biometric Verification

Hardware-Locked Geofencing

CRB-Ready Audit Trails

Deepfake Mitigation

Compare YEO with Legacy Infrastructure

YEO

Standard MFA

Out-of-Band Architecture

Continuous Biometric Verification

Hardware-Locked Geofencing

CRB-Ready Audit Trails

Deepfake Mitigation

Engineered for Architectural Resilience

Bypassing compromised infrastructure to establish a direct, independent link to the verified human user.

Primary Network Failure

Infrastructure is compromised or under active attack.

OOB Handshake

YEO establishes an independent, air-gapped authentication path via the YEO OOB platform.

Continuous Biometric Hook

Face-locked liveness detection ensures the human is present throughout the viewing session.

Immutable Evidence

Tamper-evident, time-stamped event logs with exportable metadata generated instantly for filing.

STEP 1

Attack Detected

STEP 2

Activate YEO

STEP 3

Verify & Connect

STEP 4

Coordinate Response

Engineered for Architectural Resilience

Bypassing compromised infrastructure to establish a direct, independent link to the verified human user.

Primary Network Failure

Infrastructure is compromised or under active attack.

OOB Handshake

YEO establishes an independent, air-gapped authentication path via the YEO OOB platform.

Continuous Biometric Hook

Face-locked liveness detection ensures the human is present throughout the viewing session.

Immutable Evidence

Tamper-evident, time-stamped event logs with exportable metadata generated instantly for filing.

STEP 1

Attack Detected

STEP 2

Activate YEO

STEP 3

Verify & Connect

STEP 4

Coordinate Response

Engineered for Architectural Resilience

Bypassing compromised infrastructure to establish a direct, independent link to the verified human user.

Primary Network Failure

Infrastructure is compromised or under active attack.

OOB Handshake

YEO establishes an independent, air-gapped authentication path via the YEO OOB platform.

Continuous Biometric Hook

Face-locked liveness detection ensures the human is present throughout the viewing session.

Immutable Evidence

Tamper-evident, time-stamped event logs with exportable metadata generated instantly for filing.

STEP 1

Attack Detected

STEP 2

Activate YEO

STEP 3

Verify & Connect

STEP 4

Coordinate Response

Enterprise-Grade Verification. Minimal Workflow Change.

YEO isn't just about secure communication—it’s about creating a trusted, compliant, and resilient incident response capability when everything else is compromised.

Privacy First

No sensitive message content is required for proof generation.

Controlled Pilot

Deploy as a targeted pilot for a single team or high-risk workflow before full rollout.

Rapid Reporting

Audit outputs designed for immediate SIEM/Forensic review.

OOB Resilience

Physically separate from your network

Continuous Identity Assurance

Users are continuously verified during sensitive communications

Stack Integration

Works alongside your existing MFA and Identity Provider (IdP) stack.

Enterprise-Grade Verification. Minimal Workflow Change.

YEO isn't just about secure communication—it’s about creating a trusted, compliant, and resilient incident response capability when everything else is compromised.

Privacy First

No sensitive message content is required for proof generation.

Controlled Pilot

Deploy as a targeted pilot for a single team or high-risk workflow before full rollout.

Rapid Reporting

Audit outputs designed for immediate SIEM/Forensic review.

OOB Resilience

Physically separate from your network

Continuous Identity Assurance

Users are continuously verified during sensitive communications

Stack Integration

Works alongside your existing MFA and Identity Provider (IdP) stack.

Hard-Coded Recipient Integrity

Yeo Single Bokeh
Yeo Single Boken
Yeo Single Bokeh

Evidence of Sight

Biometric confirmation that the intended eyes, and only those eyes, are on the screen.

Hardware-Locked Geofencing

Precise, GPS-locked access boundaries ensuring sensitive data stays within authorised zones.

Liveness Detection

Mitigation against deepfakes and static photos (model details in the Technical Matrix)

Data Sovereignty

AES-256 encryption at rest and TLS in transit with zero-knowledge architecture.

Hard-Coded Recipient Integrity

Yeo Single Bokeh
Yeo Single Boken
Yeo Single Bokeh

Evidence of Sight

Biometric confirmation that the intended eyes, and only those eyes, are on the screen.

Hardware-Locked Geofencing

Precise, GPS-locked access boundaries ensuring sensitive data stays within authorised zones.

Liveness Detection

Mitigation against deepfakes and static photos (model details in the Technical Matrix)

Data Sovereignty

AES-256 encryption at rest and TLS in transit with zero-knowledge architecture.

Hard-Coded Recipient Integrity

Yeo Single Bokeh
Yeo Single Boken
Yeo Single Bokeh

Evidence of Sight

Biometric confirmation that the intended eyes, and only those eyes, are on the screen.

Hardware-Locked Geofencing

Precise, GPS-locked access boundaries ensuring sensitive data stays within authorised zones.

Liveness Detection

Mitigation against deepfakes and static photos (model details in the Technical Matrix)

Data Sovereignty

AES-256 encryption at rest and TLS in transit with zero-knowledge architecture.

COMPLIANCE

Engineered for Regulatory Rigour

Every confidential file sent without human verification increases exposure under CRB 24-hour disclosure rules.

CRB Compliance Ready

NIS2 & DORA Alignment

Liability Mitigation

COMPLIANCE

Engineered for Regulatory Rigour

Every confidential file sent without human verification increases exposure under CRB 24-hour disclosure rules.

CRB Compliance Ready
NIS2 & DORA Alignment
Liability Mitigation

COMPLIANCE

Engineered for Regulatory Rigour

Every confidential file sent without human verification increases exposure under CRB 24-hour disclosure rules.

CRB Compliance Ready
NIS2 & DORA Alignment
Liability Mitigation
Yeo Single Bokeh

Frequently Asked Questions

Does YEO store biometric data?
What happens if liveness/face-lock fails?
Does this work on unmanaged or BYOD devices?
What does the Evidence of Sight log contain?
How does it integrate with SIEM workflows?

Build a More Resilient Identity Architecture.

Own the Evidence of Sight. Download the Technical Matrix to see how YEO eliminates single points of failure.

Build a More Resilient Identity Architecture.

Own the Evidence of Sight. Download the Technical Matrix to see how YEO eliminates single points of failure.

Build a More Resilient Identity Architecture.

Own the Evidence of Sight. Download the Technical Matrix to see how YEO eliminates single points of failure.

Links

Privacy Policy

Terms

Technical Documentation

Contact

© 2026 YEO messaging Ltd is registered in England and Wales 10785061.

US Patent No: 10,607,035 (Granted March 31, 2020)
GB patent No: 1713943.7 (Granted February 2022))
Chinese patent 201880071020.4 (Granted April 2nd 2024)
EU patent No: PCT/EP2018/073464 (applied Feb 2020)

Links

Privacy Policy

Terms

Technical Documentation

Contact

© 2026 YEO messaging Ltd is registered in England and Wales 10785061.

US Patent No: 10,607,035 (Granted March 31, 2020)
GB patent No: 1713943.7 (Granted February 2022))
Chinese patent 201880071020.4 (Granted April 2nd 2024)
EU patent No: PCT/EP2018/073464 (applied Feb 2020)

Links

Privacy Policy

Terms

Technical Documentation

Contact

© 2026 YEO messaging Ltd is registered in England and Wales 10785061.

US Patent No: 10,607,035 (Granted March 31, 2020)
GB patent No: 1713943.7 (Granted February 2022))
Chinese patent 201880071020.4 (Granted April 2nd 2024)
EU patent No: PCT/EP2018/073464 (applied Feb 2020)