01Human presence
How can a system establish that the expected human is physically present for a specific action?
Identity, access and agent authorization—without treating a reusable digital signal as final authority.
4SI RESEARCH 2 PAPERS · 1 RESEARCH NOTE
Research for systems that cannot afford ambiguity.
4SI studies how digital systems can establish the human, object and authority behind consequential action—and where physical verification creates a defensible control boundary.
Four questions
define the work.
The program is deliberately narrow. We focus on the points where a valid digital claim can still be disconnected from the physical person, object or authority it is meant to represent.
02Object authenticity
How can a physical object remain verifiably bound to its claimed origin, custody and state?
Products, components and sealed assets across manufacturing, handoff, installation and use.
03Autonomous authority
When should an intelligent system be required to obtain renewed, physically grounded authority?
Before money moves, access is granted, control transfers or software causes a physical action.
04Economics of assurance
Which loss pathways can physical verification materially change—and at what cost?
Measured against deployment friction, failure modes, assurance level and the value of the decision.
Published work
Three releases.
Three releases.
One research program.
Long-form papers are paired with persistent Zenodo records. The economic note connects the same control problem to observable loss and deployment economics.
001TECHNICAL REPORT
20 JULY 2026 · FRONTIER AI GOVERNANCE
Verification as a Control Primitive for Frontier AI
Why consequential AI execution requires an enforceable verification boundary—not another advisory layer.
002RESEARCH REPORT
21 JULY 2026 · CYBER-PHYSICAL ASSURANCE
Physical Trust at the Digital-Physical Boundary
An information-theoretic framework for verification in autonomous action systems and the assurance gap between a valid record and its physical referent.
003RESEARCH NOTE
16 JULY 2026 · ECONOMIC ASSURANCE
The Economics of Verifiable Reality
Primary-source evidence on fraud, counterfeit trade, weak authorization and the conditions under which physical trust infrastructure can change loss economics.
Research standard
Evidence before
Evidence before
assertion.
4SI research is designed to remain useful under scrutiny. Public evidence, 4SI analysis, testable hypotheses and product claims are treated as different categories.
Source
Prefer direct, official and persistent records. Identify the provenance and date of every material claim.
Separate
Distinguish documented fact from inference, proposed control logic and future product capability.
Bound
State assumptions, boundary conditions, limitations and the failure modes a control does not resolve.
Preserve
Publish versioned records and DOI-backed papers where durable citation improves shared understanding.
PUBLIC RESEARCH
Questions, evidence, models and bounded conclusions.
CONTROLLED VALIDATION
Technical performance, architecture and adversarial evaluation.
DEPLOYMENT EVIDENCE
Measured outcomes inside a defined institutional workflow.
Bring one boundary
worth testing.
4SI works with institutions that can define a consequential workflow, the authority it depends on and the evidence required to judge whether a physical verification boundary improves it.