The GS1 Sunrise Transition Guide: Migrating Retail Packaging to 2D Barcodes

Understanding the Shift: Why the Industry Is Replacing 1D-Only Thinking

The barcode on retail packaging was originally optimized for one dominant task: point-of-sale product identification. It did that job brilliantly. A linear UPC or EAN symbol encodes the GTIN used for price lookup and inventory systems, and decades of retail infrastructure grew around that simple, universal scan. But the surrounding information environment has changed. Brands are now asked to provide origin, ingredients, safety content, recycling instructions, certifications, promotion flows, recall support, and increasingly precise traceability at the same time.

Trying to solve all of those use cases with separate labels creates clutter and inconsistency. One symbol for checkout, another for marketing, another for internal traceability, another for regulatory web links, and sometimes still another for warehouse-only purposes. That fragmentation increases artwork complexity and confuses both operators and consumers. The logic of the 2D transition is therefore not simply "more data fits in a smaller shape." The deeper value is that a single standards-based data carrier can serve multiple audiences without fragmenting the package.

GS1's retail migration work reflects this shift. By the end of 2027, the goal is that retail POS systems should be able to read and process a defined set of 2D barcodes with GS1 standards in addition to existing linear barcodes. That "in addition to" language is central. The industry is expanding the data carrier model, not pretending that legacy retail systems no longer exist. The most successful migration programs understand both realities at once: the future is richer data in 2D, and the present is a staged rollout that must keep selling product through today's stores.

Brand owners should also notice that the business case is broader than checkout. A 2D barcode can support traceability in the warehouse, consumer engagement on the shelf, and packaging simplification for future regulatory disclosures. In other words, the strongest return on migration does not come from scanning alone. It comes from turning the product identifier into a multi-channel information gateway.

The Physical and Data Limits of Legacy Linear Barcodes

Linear retail codes carry a single static identifier exceptionally well, but they are constrained by design. A traditional UPC or EAN symbol is wide rather than deep: it represents data through changing bar and space widths on one axis. That format is perfect for fast price lookup and mature laser-scanner environments, but it does not naturally hold multiple attributes such as serial numbers, lot numbers, or expiration dates inside the retail symbol the way modern traceability demands often require.

Packaging teams feel those constraints physically. Linear symbols need horizontal real estate and quiet zones that can be awkward on small, curved, or highly designed packaging. If the product also needs a consumer-facing QR code, the artwork begins to accumulate separate machine-readable graphics. That may work for a while, but it becomes fragile as more digital and disclosure use cases are added.

2D symbols change the geometry. Because they encode data in both dimensions, they can often store more information in a smaller footprint than a comparable 1D retail symbol plus separate auxiliary code. GS1's retail guidance also notes that 2D X-dimensions are governed differently than linear code sizes, which matters when packaging engineers begin resizing artwork for real-world print and scan conditions. The point is not that 2D is automatically tiny. The point is that it uses space more efficiently for richer payloads.

There is also a consumer-device reality. Generic smartphone cameras natively recognize QR codes far more consistently than they recognize many industrial matrix codes. That is one reason QR codes powered by GS1 are currently attractive for retail and consumer engagement scenarios, while GS1 DataMatrix remains especially strong where compact industrial marking and structured identification are priorities. The migration decision is therefore partly technical, partly operational, and partly human-interface design.

The GS1 Digital Link Architecture: Bridging Logistics and Consumers

GS1 Digital Link is the bridge between product identification and the web. The basic idea is elegant: express GS1 identifiers in a standards-based web URI so that the same scan can support traditional business systems and digital content resolution. That is why the model is so important to Sunrise 2027 planning. It does not throw away the GTIN-centered world retailers already depend on. It extends it into a web-native format.

https://id.yourbrand.com/01/00614141999996/21/A1B2C3?10=LOT77&17=271231
domain                   GTIN        serial      batch     expiry

In practice, the structure is usually described in three layers. First, there is the brand or resolver domain, such as id.yourbrand.com. Second, there is the primary key path, commonly the GTIN encoded with AI 01. Third, there may be key qualifiers and additional data attributes. A serial number often appears as a key qualifier in the path, such as AI 21. Data attributes like lot or expiration often appear in the query string. That structure is useful because it preserves the product identity in a standards-aware format while allowing digital services to react intelligently to the scan.

Why that matters operationally

A warehouse scanner or POS system can still extract the product identification it needs. A consumer smartphone, meanwhile, can follow the same URI into a resolver or landing flow. The brand can direct that consumer to instructions, sustainability information, ingredients, warranty support, or market-specific content without reprinting the barcode every time the web experience changes. That is the central economic advantage of Digital Link: the identifier on-pack remains stable while the digital content behind it can evolve.

One barcode, multiple audiences

The architecture also reduces future packaging churn. Because the symbol points into a web-governed information model, brands can refresh content, add languages, change campaign destinations, or connect new service endpoints without changing the printed code itself. That is especially relevant when regulatory disclosure needs are still evolving and brands want flexibility without endless artwork revisions.

Choosing the Right 2D Payload: More Data Is Not Always Better Data

One of the most common planning mistakes is assuming that if a 2D symbol can hold more information, it should hold as much as possible. That approach creates oversized codes, inconsistent product behavior, and unnecessary complexity at checkout. A better migration mindset starts with the business question and only then selects the payload. In many retail programs, the minimum viable move is simply to carry the GTIN in a 2D carrier so POS systems can extract the same core identifier they already understand. Everything beyond that should earn its place.

Serial number, batch or lot, and expiration date are powerful additions when the use case justifies them. They support food safety, recall precision, unit-level traceability, and advanced consumer or service workflows. But those benefits come with design consequences: more encoded data means denser symbols, stricter print discipline, and more parsing requirements in store systems. Brands should therefore avoid a "more is always better" philosophy. The better standard is "encode the smallest set of data that creates real value for this product and channel."

Payload design also needs a hard line between what belongs in the symbol and what belongs behind the resolver. Market-specific promotions, localized instructions, or content experiments do not all need to be hard-encoded into the barcode itself. A stable identifier plus a well-governed resolver often gives more flexibility than stuffing campaign logic into the printed payload. The product remains identifiable everywhere, while the destination experience can vary by language, geography, device, or season without forcing a reprint.

That distinction keeps the barcode useful instead of bloated. It also makes organizational ownership clearer. Supply-chain teams can govern the encoded identifier model, while digital teams govern the content and services users reach after the scan.

Technical Comparison: 1D Legacy vs. 2D Next-Gen Retail Layouts

Important caveat: "can" does not mean "automatically will." The business gains appear only if packaging, scanners, software parsing, resolver behavior, and content governance are all planned together.

Packaging and Artwork Migration: Designing for a Coexistence Period

Most migration pain shows up in packaging first. Creative teams may hear "replace UPC with QR" and assume the work is mostly visual. In reality, the artwork task is downstream of data strategy and retail readiness. Before packaging is redesigned, teams need to know which products will pilot 2D first, which retail partners can process the new symbols, whether dual-marking is required, what scan distances need to be supported, and whether the data payload will include only GTIN or richer fields such as lot, expiration, or serial.

For many brands, the first practical step is not full replacement. It is carving out intentional space for a future-ready 2D symbol while keeping the linear symbol in place during rollout. This is where the coexistence period pays off. The brand can validate print quality, lighting behavior, and checkout performance without disrupting existing retail operations. Packaging teams also gain time to standardize label zones and quiet spaces across SKUs rather than making rushed, inconsistent changes one product at a time.

Artwork questions worth settling early

• Will the 2D symbol need to serve both checkout and smartphone engagement from day one?
• Is QR Code powered by GS1 the best fit, or is Data Matrix more practical for space-constrained packaging?
• Will certain channels still require a linear code in parallel for a defined period?
• How will human-readable text and support copy be positioned so they do not create scan confusion?
• Are multilingual or regional web experiences needed behind the resolver?

Packaging teams should also coordinate with print engineering. A theoretically correct Digital Link payload still fails if module size, substrate, quiet zone, or contrast are wrong. That is why migration planning should connect creative, data, and production teams rather than treating the 2D symbol as a late-stage sticker addition.

Retail Scanner and POS Readiness: Hardware Is Only Half the Story

One of the easiest migration mistakes is assuming that a 2D-capable scanner alone solves the checkout problem. In reality, readiness requires at least three layers to align. The hardware must capture the symbol. The POS software must interpret the GS1 payload correctly. The store operating model must know what to do with the scan result, especially if extra attributes beyond GTIN are present.

Older red laser scanners are the clearest constraint because they were built for linear reflectance patterns, not 2D image grids. Those devices cannot read a QR or Data Matrix symbol in the way a 2D area imager can. But even after the hardware is upgraded, retailers still need software logic that can extract the GTIN or related identifiers from GS1-compliant 2D payloads without breaking existing price-lookup workflows. That is why GS1's migration work emphasizes both reading and processing.

Another practical issue is mixed-store reality. Chains often operate multiple generations of hardware, sometimes across franchise or regional environments. That means brand owners should not assume universal 2D acceptance just because a strategic retailer has announced support. Product teams need concrete rollout coordination, not abstract optimism.

Testing and Exception Management Before You Touch the Full Portfolio

Migration programs fail quietly when teams test only the happy path. A code that scans in a conference room demo can still fail on a glossy pouch under store lighting, on a curved can, at a self-checkout lane, or after a carton has been scuffed in distribution. That is why 2D planning needs a formal test matrix before any broad packaging conversion begins.

The first layer of testing is physical. Print the exact production artwork on the actual substrate with production-quality methods and validate the result under expected lighting and distance conditions. The second layer is systems testing. Verify that retailer or internal POS software extracts the expected GTIN and handles any additional attributes correctly. The third layer is digital testing. Make sure the resolver directs users to the right destination in different regions, on different devices, and after content updates.

Exception handling deserves the same rigor. Decide what should happen if a retailer scanner reads the 2D code but the POS software cannot yet process the richer payload. Decide what customer support should do if a consumer scan lands on the wrong market page because localization rules were incomplete. Decide how packaging teams will roll back if a resolver change breaks destination routing. Mature programs create these playbooks before launch so the first incident becomes a controlled drill instead of an improvised crisis.

Recommended pilot test set

• Multiple package materials and print methods
• Handheld scanner, presentation scanner, and self-checkout scenarios
• Older versus upgraded store hardware where possible
• Consumer scans on iOS and Android default camera apps
• Resolver behavior by country, language, and promotional state

That test discipline may feel slower up front, but it is what prevents a pilot from becoming a packaging recall of its own.

RFID vs Barcode Logistics Efficiency: Replacement Myth vs Complementary Reality

Whenever barcode evolution is discussed, the conversation eventually turns to RFID. That comparison is useful, but only if it is framed honestly. RFID and barcodes solve overlapping but not identical problems. RFID can be read without direct line of sight, multiple tags can be read simultaneously, and tag data can sometimes be rewritten. Those features make RFID powerful for specific logistics, inventory, and automation use cases.

Barcodes, meanwhile, remain dramatically cheaper to print, easier to deploy on consumer packaging, and already integrated into practically every retail workflow on the planet. A QR Code powered by GS1 or a GS1 DataMatrix symbol does not need a silicon tag, special radio infrastructure, or a completely different package construction. That cost and simplicity advantage is why 2D barcodes are such a strong bridge technology for the next phase of retail transformation.

The better strategic question is usually not "RFID or barcode?" but "Where does each technology create the most value?" Many organizations will continue to use barcodes on-pack for consumer and retail interoperability while using RFID deeper in the supply chain for speed and inventory visibility. Complementary design beats false either-or thinking.

Regulatory and Disclosure Horizon: Why 2D Migration Supports More Than Checkout

One reason the 2D transition matters so much is that it aligns with a broader trend toward richer product disclosure. Regulators, marketplaces, and consumers all increasingly expect accessible information about composition, origin, safety, recyclability, and authenticity. The exact legal timelines differ by market and category, and they continue to evolve, so brands should verify jurisdiction-specific requirements before making claims. But the structural direction is clear: products need a better bridge between physical packaging and digital information.

That is where GS1 Digital Link becomes more than a scanner topic. A standards-based web identifier gives brands a flexible path to connect packaging to evolving disclosures without adding a new symbol for every new demand. Sustainability and circularity use cases are especially relevant here because they often depend on product-specific information that changes by market, language, or regulatory scheme. A dynamic resolver-backed model is far more adaptable than static packaging text alone.

It is also important to avoid overpromising. A 2D barcode does not automatically make a product compliant. The barcode is the access mechanism. The quality, accuracy, governance, and legal sufficiency of the underlying data still need process ownership. What 2D migration does is create a much stronger technical foundation for future disclosure and traceability workflows than a 1D-only package can provide.

Resolver Governance and Content Operations: The Hidden Work After the Scan

Once a 2D code points to a GS1 Digital Link URI, the printed symbol is only half the system. The other half is the resolver and content operation that sits behind it. This is where many organizations underestimate the work. They approve the barcode layout, but they do not assign ownership for destination rules, uptime expectations, localization, retirement policies, analytics boundaries, or emergency changes. The result is a technically correct barcode that leads into a poorly governed experience.

A practical governance model answers five questions. First, who owns the resolver domain and certificate lifecycle? Second, who approves destination logic when a scan might need to route differently by market or audience? Third, what uptime and monitoring standard applies to the digital endpoint? Fourth, how are content changes audited so that consumer and partner experiences can be traced over time? Fifth, what fallback behavior should occur if the preferred destination is unavailable?

These questions matter because the value proposition of Digital Link is precisely that the post-scan experience can change without reprinting packaging. That flexibility is powerful, but it also introduces operational responsibility. If a marketing team can change a destination instantly, there should be guardrails preventing them from accidentally breaking product-support content or redirecting a regulated information flow inappropriately. If a retailer or third-party app relies on the identifier for lookup, the resolver strategy should respect that ecosystem rather than assuming the scan is only for consumers.

The best organizations therefore treat resolver management like a real production service. They monitor latency, track broken destinations, document routing rules, version content changes, and separate routine campaign edits from high-risk compliance content. That discipline turns 2D migration from a packaging project into a reliable information architecture.

Migration Roadmap: How to Prepare Between Now and the End of 2027

The best migration plans move in stages. They do not attempt a portfolio-wide packaging redesign before the data, retail, and operations teams know what they are aiming for. A phased program also mirrors GS1's own guidance that not every advanced 2D capability must be live by the end of 2027 for progress to be meaningful.

Practical implementation order

1. Inventory your current package codes: linear POS codes, marketing QR codes, warehouse labels, and any separate digital identifiers.
2. Decide which 2D carrier fits the use case: QR for broad consumer engagement, Data Matrix for constrained industrial or packaging contexts, or a mixed strategy by product category.
3. Define the minimum viable payload. Start with GTIN, then add qualifiers or attributes only when there is a clear business reason.
4. Stand up a resolver or destination strategy so digital experiences can be updated without changing the printed code.
5. Test on real packaging under real lighting, print, and checkout conditions.
6. Roll out by retailer, product family, or private-label segment rather than assuming global uniformity.

The teams that move earliest are not necessarily the ones that redesign every pack first. They are the ones that create clean data governance, resolver strategy, and testing discipline first, because those foundations let packaging scale later without rework.