Reviews
Part of Fashion supply chain traceability: claims, mapping, events, and evidence
Setting the chain traceability choices against each other
Fashion supply chain traceability compared: documents, spreadsheets, databases, product passports, identifiers, custody models, and verification levels.
What to take away
- Compare governance and evidence before comparing software features.
- Paper and spreadsheets can support narrow scopes but become fragile at scale.
- Shared databases improve relationships and validation when identifiers are controlled.
- Product passports disclose structured information; they do not verify all source data.
- Chain-of-custody models must be compared separately from technical platforms.
Traceability choices sit on three axes: how material claims are controlled, how events are recorded, and how information is shared.
A company can use mass balance in a shared database, physical segregation in spreadsheets, or item serialization with weak upstream evidence. Avoid treating one technology label as the whole method.
The axes are described in the supply chain traceability guide.
Comparison criteria
Assess each option for product granularity, actor coverage, transformation handling, volume reconciliation, evidence links, validation, correction history, interoperability, access control, supplier burden, resilience, cost, and public disclosure.
The UN/CEFACT textile and leather process and data model connects traceability information entities to business processes and is designed for use across countries, industries, and software environments. Its value is a shared structure. Adoption of a model does not guarantee complete or accurate records.
Recording systems
Strength
- Paper documents
- Familiar, accessible, original signatures where needed
- Controlled spreadsheet
- Fast pilot, flexible, low setup cost
- Internal relational database
- Strong object links, validation, permissions
- Shared supplier platform
- Common workflows and direct submissions
- Federated exchange
- Data stays with actors and is requested through standards
- Distributed ledger
- Tamper-evident sequence among participants
Weakness
- Paper documents
- Slow search, duplication, damage, manual matching
- Controlled spreadsheet
- Version conflict, weak relationships, scaling errors
- Internal relational database
- Integration and maintenance burden
- Shared supplier platform
- Vendor dependence, onboarding burden, data ownership issues
- Federated exchange
- Identity and interoperability complexity
- Distributed ledger
- False input remains false, privacy and correction complexity
Best fit
- Paper documents
- Low-volume local process with digitization controls
- Controlled spreadsheet
- One product or supplier pilot
- Internal relational database
- Brand with stable data team
- Shared supplier platform
- Multi-supplier programs
- Federated exchange
- Mature networks with shared governance
- Distributed ledger
- Selected multi-party events with a clear reason
Paper is not automatically unreliable, and blockchain is not automatically trustworthy. Controls, source evidence, reconciliation, and response to exceptions determine usefulness.
Recording systems compared
Paper
- Strength
- Familiar, accessible
- Weakness
- Slow search, damage
- Best fit
- Low-volume local process
Spreadsheet
- Strength
- Fast pilot, flexible
- Weakness
- Version conflict
- Best fit
- One product pilot
Internal database
- Strength
- Strong object links
- Weakness
- Integration burden
- Best fit
- Brand with data team
Shared platform
- Strength
- Common workflows
- Weakness
- Vendor dependence
- Best fit
- Multi-supplier programs
Identification options
Batch and lot identifiers
Batch-level tracing balances cost and recall usefulness for many materials. It becomes weak when batches are combined without recording allocations or when a printed lot code is reused.
Serialized item identifiers
Serialization can support unit history, resale, repair, or authentication. It raises attachment, duplication, privacy, data-volume, and lifecycle-maintenance questions. The identifier must stay connected to the item.
QR codes and barcodes
These are optical carriers or lookup mechanisms. They are inexpensive and broadly readable, but visible codes can be copied. They do not contain proof merely because they resolve to a polished page.
RFID and NFC
Radio-based tags can be read without direct line of sight and may support inventory or item-level services. Hardware cost, read conditions, privacy, removal, recyclability, and data retention need review.
Chain-of-custody comparison
Material handling
- Identity preserved
- Source remains separately identifiable
- Segregated
- Eligible inputs stay apart from noneligible input
- Controlled blending
- Eligible and other inputs combine under rules
- Mass balance
- Claims allocated through accounting rules
- Book and claim
- Certificate and physical flow can be separate
Permitted claim risk
- Identity preserved
- Source identity lost through accidental mixing
- Segregated
- Multiple eligible sources may be combined
- Controlled blending
- Percentage misunderstood or misstated
- Mass balance
- Buyer assumes physical content in one item
- Book and claim
- Strong risk of physical-product inference
Use the scheme's definitions. Similar names can have different allocation and claim rules. How custody models pair with certification types is mapped in the certification comparison.
Chain-of-custody models
Identity preserved
- Material handling
- Source separately identifiable
- Permitted claim risk
- Source identity lost
Segregated
- Material handling
- Eligible inputs kept apart
- Permitted claim risk
- Multiple sources combined
Controlled blending
- Material handling
- Eligible and other combine
- Permitted claim risk
- Percentage misstated
Mass balance
- Material handling
- Claims via accounting rules
- Permitted claim risk
- Buyer assumes physical content
Product passport versus traceability database
A traceability database may contain confidential transactions, facility evidence, quantities, and risk records. A product passport is a structured view of information made available to defined users through an identifier. It can draw from several systems. Passports earn their keep when products re-enter service; the circular approach comparison shows which routes lean on that data.
The European Commission's overview of the Ecodesign for Sustainable Products Regulation explains that the law enables product information and requirements across many physical-goods categories. Product-specific duties depend on later rules and scope. Do not claim that every garment already requires a complete digital product passport solely because the framework regulation exists.
Verification levels
Self-reported data is fastest but needs risk-based checks. Document review tests consistency. Transaction matching connects parties and quantities. Site visits examine implementation at a point in time. Testing can confirm selected physical or chemical properties. Independent assurance can strengthen credibility within its scope.
No one level answers every field. A laboratory cannot verify wages from fiber content, and an audit cannot identify exact polymer composition without suitable evidence.
Best fit by use case
- Recall readiness:batch IDs, transformation links, and warehouse-to-customer records.
- Material-content claim:custody model, transaction evidence, reconciliation, and testing where relevant.
- Labor-risk review:site identity, subcontracting, worker channels, risk data, and corrective-action history.
- Resale or repair:durable item ID, product version, materials, care, parts, and privacy controls.
- Public provenance page:curated verified fields, scope, date, missing tiers, and plain limitations.
- Regulatory readiness:data dictionary aligned with current delegated or product-specific requirements.
Decision rule
Choose the least complex system that can preserve the required object relationships, evidence, corrections, permissions, and volume controls at expected scale. Test portability before committing to a vendor. Keep identifiers and data definitions usable if the platform changes. Piloting under the traceability decision method surfaces those requirements early.
Common questions
Is a product passport public?
Access can vary by data field and user role. Consumer, regulator, repairer, recycler, and manufacturer views may differ under the applicable system.
Does serialization replace batch tracing?
No. Unit records often inherit material and production data from batches. Both levels need reliable links.
Is physical segregation always superior?
It offers stronger physical identity but can cost more and may not fit every material flow. Compare the required claim and risk.
Can spreadsheets pass an audit?
They can support evidence when controlled, validated, versioned, and reconciled. Their risk rises with users, suppliers, objects, and updates.
What evidence would change the platform choice?
Transaction volume, error rate, recall performance, supplier capability, integration cost, privacy needs, and regulatory data requirements can justify a different design.
