High-assurance access
Add physical presence to critical physical and digital access paths.
4SI / Presence
Presence.
The physical trust platform for a world beyond digital certainty.
Presence connects human authority, physical authenticity and institutional control — so consequential systems can verify what is actually there before they act.
ONE PLATFORMPHYSICAL → DIGITAL
01PRESENCE KEYHuman authority
↗
02PRESENCE LAYERObject authenticity
↗
03PRESENCE HOMEInstitutional control
↗
CL TECHNOLOGY CORE
THE CATEGORYPHYSICAL TRUST INFRASTRUCTURE
Digital systems can process a claim.
Presence helps establish its reality.
Presence is the shared architecture across 4SI products. It creates a governed path from a real person or object to a bounded verification result and, ultimately, to an accountable digital decision.
One platform.
Three products.
Each product owns a distinct boundary. Together they create a continuous trust path from physical reality into existing institutional systems.
From physical reality
to bounded action.
The public sequence is deliberately simple. The protected verification mechanism remains inside CL Technology; the institutional logic around it stays explicit.
- 01DEFINE
Set the authority.
The institution defines who or what may act, under which policy and at which boundary.
- 02BIND
Connect reality.
A governed relationship connects a person or object to the expected trust record.
- 03PRESENT
Bring presence.
The Key or Layer is presented where higher assurance is required.
- 04VERIFY
Return a result.
An authorized point returns only the bounded result the decision requires.
- 05ACT
Let policy decide.
Presence Home or an integrated system permits, denies, records or escalates.
03 / PRESENCE KEYHUMAN AUTHORITY
The human
behind the decision.
Presence Key is the physical interface for human authority. It helps establish that the expected person is physically participating before access, approval or control is granted.
Exceptional authorization
Require the expected human before sensitive approvals or transactions proceed.
Human-to-machine trust
Create an accountable human boundary before autonomous systems act.
Existing identity systems
Inform established identity and policy infrastructure rather than replacing it.
THE PROTECTED CORECL Technology.
CL Technology.
The protected core.
CL Technology is 4SI's proprietary verification technology. Inside Presence, it supports a narrow physical verification result without exposing protected construction, raw physical data or security-sensitive implementation.
PUBLIC
Purpose · trust path · bounded result · integration boundary
CONTROLLEDArchitecture · implementation · validation · performance
04 / PRESENCE LAYEROBJECT AUTHENTICITY
The object
behind the record.
Presence Layer extends physical trust to products, components, documents and critical assets. It creates a governed connection between an object and the systems that represent its identity, custody and lifecycle.
Verify selected manufacturing, custody, release and use events.
Connect responsibility transfers to the expected physical asset.
Product authenticity
Support verification across manufacturing, distribution and use.
Component integrity
Help identify substitution or unauthorized replacement at defined checkpoints.
Chain of custody
Connect physical handoffs to existing traceability and responsibility records.
Lifecycle verification
Maintain governed trust beyond the first point of enrollment or sale.
05 / PRESENCE HOMEINSTITUTIONAL CONTROL
The home for
physical trust.
Presence Home is the institutional environment for governing trust relationships, policy, verification events and integrations. Its private beta brings these control surfaces into one workspace while keeping physical proof bounded to its intended purpose.
Three products.
One accountable event.
Presence gives institutions a consistent way to request, interpret and govern physical verification across different people, objects and operating environments.
PERSONPRESENCE KEYHuman authority
→
OBJECTPRESENCE LAYERPhysical authenticity
→
BOUNDED EVENTVERIFYContext-specific result
→
INSTITUTIONPRESENCE HOMEPolicy · lifecycle · evidence
→
EXISTING SYSTEMSACTPermit · deny · record · escalate
Credibility begins with
explicit boundaries.
A serious deployment defines what Presence verifies, under which conditions, which authority interprets the result and what downstream action may follow.
Threat model
Define the adversary and the impersonation, substitution or control failure that matters.
Verification policy
Specify where physical proof is required and which assurance level is appropriate.
Integration boundary
Control which result enters identity, transaction, operational or AI systems.
Lifecycle control
Govern enrollment, use, exception, review, revocation and retirement.
Begin with a boundary.
Scale with evidence.
Presence is introduced against a concrete trust failure, not as an abstract enterprise transformation.
- 01FRAME
Define the consequential boundary.
Identify the person, object, action and failure mode that require stronger trust.
- 02EVALUATE
Test the relevant claims.
Establish operating conditions, assurance requirements and validation criteria.
- 03INTEGRATE
Connect policy to action.
Introduce bounded results into the systems already governing the workflow.
- 04EXPAND
Scale the trust architecture.
Extend coverage only where evidence, operations and governance support it.
Bring reality
back into the decision.
Evaluate Presence against a defined authority, authenticity or control boundary.
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