Identity & policy
Your institution defines the account, mandate, consequence and rules.
For organizations
Trust should be established
before a system acts.
4SI gives institutions a physical way to establish the accountable person, authentic object or governed environment behind a consequential digital decision.
Physical evidenceExisting governanceBounded deployment
Looking for the personal Key?
Explore Key for individuals ↗
The brand and customer experience remains on by4si.com.
The institutional gap
Digital validity is not physical proof.
Credentials, instructions and records can be valid while the physical situation behind them is wrong. 4SI adds an evidence boundary to existing systems—without replacing institutional identity, policy or software.
A complementary control layer
Strengthen the moment of decision.
Keep the system you already govern.
4SI does not replace institutional identity, policy or authorization. It establishes the physical fact those systems cannot establish on their own.
Physical evidence
Presence establishes the accountable person, authentic object or governed environment.
Permit, deny or escalate
Your existing system remains responsible for the decision and its record.
IAM & SSOPhysical accessTransaction approvalService & warrantyAsset & custody systemsPolicy & audit systems
One architecture · Three anchors
Presence, built around what must be trusted.
Select the physical fact an institution needs before a consequential action is allowed.
01 / Human presence
Presence Key
A human-held, biometric interface for establishing accountable presence without adding another connected endpoint.
- Offline by design
- Biometrically bound
- Partner-agnostic integration
Operational applications
Begin where trust failure has a consequence.
One bounded workflow is enough to test whether stronger physical evidence changes the decision.
Human authority
Know who is physically present.
Access · approvals · recovery · privileged action
Object authenticity
Keep real products distinguishable.
Origin · custody · service · resale
Agent authority
Bind software action to legitimate authority.
Mandate · scope · presence · revocation
Operational control
Add physical evidence where digital certainty ends.
Facilities · logistics · financial approval · controlled environments
Banking & paymentsInsuranceRetail & marketplacesHospitalityMobility & rentalsReal estate & workplacesHealthcare & life sciencesEducationManufacturingAutomotiveSemiconductorsPharmaLogistics & warehousingEnergy & utilitiesLuxury & cultural assetsTechnology operations
From signal to control
See where trust is separating from reality.
Then strengthen the decision.
4SI Intelligence makes emerging trust exposure visible. Presence adds a physical evidence boundary to the workflows that matter—while authority and policy remain with the institution.
Intelligence
Monitor source-backed signals across identity, products and autonomous action.
Institution
Define the consequence, authority, policy and physical fact that must hold.
Presence
Establish the accountable person, authentic object or governed environment before action.
4SI Intelligence · Public beta
Start with one position.
Open every source behind it.
Intelligence brings scattered risk signals into one source-backed view. Teams can see where digital proof is drifting away from physical reality, understand the evidence and test what could fail next.
4SI IntelligencePublic betaCurrent position
Presence Risk Index
Evidence library
Open the record behind the position.
Identity misuseOfficial sourceProduct authenticityOfficial sourceAgent authorityReviewed analysis
Scenario Lab
What must be physically true first?
Consequential action→Required physical claim→Decision boundary
A controlled path to deployment
Evidence before expansion.
Evaluation begins with a consequential action, an explicit physical claim and a measurable decision boundary.
- 01 / Define
Name the action that cannot be wrong.
Identify the decision, failure consequence and accountable owner.
- 02 / Bound
State what must be physically true.
Specify the person, object or environment that must be present.
- 03 / Evaluate
Test the evidence boundary.
Run a controlled workflow with explicit acceptance criteria.
- 04 / Integrate
Keep governance intact.
Connect the result to existing policy, software and oversight.
Evaluation outputs
A decision package,
not a demonstration.
Each evaluation is designed to leave the institution with a bounded, reviewable basis for a scale, revise or stop decision.
Review the evidence method →Authority boundary map
The action, accountable owner, physical claim and failure consequence.
Threat and failure model
Misuse, substitution, exception and fallback conditions made explicit.
Integration contract
What Presence establishes, what the institution decides and what is recorded.
Evidence record
Acceptance criteria, observed results and unresolved limitations.
Scale-or-stop decision
A documented recommendation for deployment, revision or discontinuation.
Available for evaluationPresence boundary design
Currently validatingKey and Layer prototypes
Long-horizon directionPresence Home
Founding Institution Program
Bring one process.
Define what must be verified.
4SI works with selected institutions to locate the physical trust gap inside one consequential workflow and evaluate whether Presence can reduce it.
- 01 / Sponsor
- An accountable operational owner.
- 02 / Boundary
- A person, object or authority that must be physically established.
- 03 / Decision
- Explicit criteria to scale, revise or stop.
Strategy 2033 · Direction, not forecast
From one physical proof
to a common trust interface.
4SI is building toward a world in which people, products and institutions can establish what is physically true through one interoperable trust system. The Key remains the personal anchor. Layer extends trust to objects. Home connects those relationships to governed environments.
01 / Personal anchorOne human.
One human.
One Key.
Begin with a replaceable, biometrically bound physical interface that remains useless to anyone else.
02 / Open ecosystemOne interface.
One interface.
Many institutions.
Enable participating partners to connect access, authorization, mobility and trusted services without binding the person to one provider.
03 / Physical trust infrastructureTrust becomes
Trust becomes
a place to meet.
As artificial intelligence becomes more capable, institutions still need an accountable human, authentic object or governed environment behind consequential action.
2033 is a strategic direction, not a product availability date or performance promise.
Partner-agnosticPrivacy-boundedInstitutionally governedPhysically accountable
Research informs deployment
Institutional claims require institutional evidence.
4SI research defines the physical evidence gap, publishes system boundaries and separates demonstrated capability from future targets.
Explore 4SI Research →4SI Enterprise
Start with one workflow worth protecting.
Bring the operating context. We will help define the physical claim, evaluation boundary and responsible path forward.