Connect the record to the selected physical asset.
The institution defines which product, component, document or sealed unit is expected at a particular checkpoint.
Presence / 02 · Object authenticity
Presence
Layer.
The physical trust layer connecting a real object to the record, custody event or workflow that represents it.
01 / FROM RECORD TO REALITY
A protected record can still refer
to the wrong physical object.
A governed connection
to the physical original.
Presence Layer adds an independent checkpoint where substitution, diversion, counterfeiting or custody ambiguity creates material consequence.
Verify at the moment the object matters.
Receipt, release, installation, maintenance, transfer or use can become explicit physical trust boundaries.
Return only what the workflow needs.
The receiving system obtains a narrow verification result without exposing protected physical data or security-sensitive implementation.
From enrollment
to controlled handoff.
The public model makes custody and decision ownership visible while the underlying mechanism remains protected.
Set the object and event.
Specify what must be verified, where and under which threat model.
Establish the relationship.
Create a governed association between the protected physical asset and its record.
Bring the object to the checkpoint.
The expected asset is presented at receipt, release, transfer, installation or use.
Return a narrow result.
An authorized point evaluates the defined physical condition.
Update the workflow.
The institution accepts, holds, escalates or records according to policy.
One trust layer.
Five operational boundaries.
Presence Layer can take different physical forms while answering the same bounded question: is the expected protected object present at the checkpoint where it matters?
ADVANCED MANUFACTURINGINSTALLATION CONTROL
The expected component
before it enters the system.
A selected precision part can be checked before assembly, maintenance or quality release—where an equivalent-looking substitute would create downstream risk.
- OBJECT
- Approved component
- CHECKPOINT
- Installation or release
- RESULT
- Accept · hold · escalate
- INTEGRATION
- Quality and asset systems
SECURE LOGISTICSCUSTODY CONTROL
The physical shipment
behind the transfer record.
Receipt and handoff can require evidence that the protected unit presented is the unit expected by the custody workflow—not merely a package carrying plausible data.
- OBJECT
- Sealed shipment
- CHECKPOINT
- Receipt or transfer
- RESULT
- Receive · quarantine · review
- INTEGRATION
- Logistics and custody systems
DOCUMENTS & CREDENTIALSORIGINAL CONTROL
The expected original
behind the institutional claim.
A physical document can be connected to a selected release, presentation or custody event without pretending that the trust layer alone proves the document’s legal meaning.
- OBJECT
- Protected document
- CHECKPOINT
- Release or presentation
- RESULT
- Expected · exception
- INTEGRATION
- Case and records systems
LIFE SCIENCES & COLD CHAINTRANSFER CONTROL
The expected container
at a consequential handoff.
A transfer workflow can verify the protected physical unit before custody changes. Temperature history, product quality and regulatory release remain governed by their dedicated evidence systems.
- OBJECT
- Controlled container
- CHECKPOINT
- Custody transfer
- RESULT
- Release · hold · investigate
- INTEGRATION
- Cold-chain and quality systems
CRITICAL & MISSION SYSTEMSMAINTENANCE CONTROL
The expected module
before access becomes action.
Maintenance, replacement and controlled-use workflows can require the expected protected component before the surrounding system permits the next governed step.
- OBJECT
- Control module
- CHECKPOINT
- Maintenance or replacement
- RESULT
- Authorize · deny · escalate
- INTEGRATION
- Maintenance and mission systems
All names, brands and products shown are fictional concept studies created solely to illustrate possible Presence Layer integrations. They do not represent customers, partners, certified products, production hardware or announced deployments.
05 / EXPLICIT BOUNDARIESAuthenticity is not
Authenticity is not
a claim about everything.
Presence Layer supports a defined physical verification question. It does not independently prove origin, quality, safety, ownership, regulatory compliance or an unbroken historical chain unless those claims are established by the surrounding institutional system.
PRESENCE LAYER CAN INFORM
Whether the expected protected physical object is present at the defined checkpoint.
THE INSTITUTION STILL DECIDES
Which provenance evidence is accepted, who may transfer custody, what quality criteria apply and which action follows.
CONTROLLED UNDER NDA
Construction, enrollment architecture, matching implementation, scanner characteristics, performance and adversarial validation.
CONNECTED CONTROLLayer verifies the object.
Layer verifies the object.
Home governs the event.
Presence Layer can deliver a bounded result to Presence Home or directly to existing supply-chain, asset, quality, maintenance and mission systems.
- 01Expected asset requestedRECORD
- 02Physical condition verifiedPRESENCE
- 03Custody policy evaluatedCONTROL
- 04Accept · hold · escalateACTION
Attach physical proof
to existing operations.
The objective is a bounded verification event that strengthens current systems—not another isolated record of truth.
Supply chain
Receipt, release, transfer and traceability workflows.
Asset systems
Installation, maintenance, inspection and retirement.
Quality systems
Approved inputs, exception handling and controlled release.
Mission systems
Materiel custody, handoff and use under defined policy.
Start with the handoff
where the wrong object cannot pass.
4SI works with selected institutions to map the physical boundary, custody model, integration path and explicit limits before deployment.