Premium packaging has always been a balance between aesthetics and function. Brands want packaging that looks distinctive, communicates product information and reinforces brand identity, while regulators, retailers and supply-chain partners require increasingly more data to be carried on the package.
Traditionally, that information has meant visible barcodes, QR codes, certification marks, recycling instructions and other mandatory elements competing for space with the creative design. Digital watermarking offers a different approach: embedding machine-readable information directly into the printed artwork without creating a visibly separate code.
According to a recent article from drupa, invisible digital watermarks are emerging as a way to turn the printed surface itself into a data carrier, creating opportunities for retail scanning, product traceability, digital product information and automated recycling.
When the Packaging Becomes the Code
A conventional barcode occupies a specific area of the package. A QR code does the same, often requiring a clear zone around it to ensure reliable scanning. While these technologies remain extremely useful, they can create challenges for premium brands where packaging design is carefully controlled.
Digital watermarking takes a fundamentally different approach.
Instead of placing a visible code on the package, information is incorporated into the artwork through extremely subtle changes to colours, tones or other image characteristics. These changes are generally invisible to consumers but can be recognized by compatible cameras and optical systems.
The result is that a much larger portion of the printed surface can function as a machine-readable data carrier.
For a premium package, this could mean maintaining a clean, uninterrupted design while still providing the information required for identification, authentication, logistics or digital engagement.
The Shift Starts in Prepress
One of the most important aspects of invisible coding is that it is not simply another finishing effect applied after printing. The data becomes part of the artwork and therefore needs to be considered during the prepress stage.
Specialized software can integrate the digital watermark into the graphic design while preserving the appearance of the finished artwork. Depending on the implementation, the encoded information can include product identification and links to digital content.
This creates a closer relationship between design, data and print production.
For packaging converters, that means the conversation around digital packaging is expanding beyond colour management and reproduction. Prepress workflows increasingly have to consider how variable data, identification, authentication and connected-product information can be incorporated into the printed product.
Why Print Quality Matters
Invisible codes may not be visible to the consumer, but they can be demanding from a production standpoint.
The underlying data pattern relies on extremely subtle variations within the printed image. Excessive dot gain, colour variation, registration errors or other production inconsistencies can interfere with the ability of a camera or optical reader to recognize the encoded information.
This puts additional emphasis on production consistency.
Accurate colour management, registration control, inspection and repeatable printing conditions become important components of the overall workflow. The drupa article specifically highlights the sensitivity of digital watermarking to printing variations and the role of camera-based inspection in maintaining production quality.
This is an important consideration as packaging moves toward increasingly data-driven production. A package may look perfect to the human eye while still requiring the underlying printed data to meet much tighter technical requirements.
From the Pressroom to the Supply Chain
The potential benefits extend well beyond the printing press.
Machine-readable invisible codes can allow packaging to be identified without requiring a visible barcode to be positioned toward a scanner. In logistics environments, cameras can potentially identify products regardless of their orientation on a conveyor.
That can support applications such as:
- Product identification
- Track-and-trace
- Inventory management
- Automated sorting
- Retail checkout
- Product authentication
- Consumer engagement
The concept is particularly interesting for high-value or premium products where product authenticity and traceability can be important considerations.
Instead of treating packaging as a passive container, digital watermarking turns it into an information-bearing component of the supply chain.
Packaging Can Become an Interactive Experience
Another major opportunity is connecting the physical package to digital information.
A machine-readable code can link a physical product to online content, potentially giving consumers access to information such as product origin, manufacturing details, sustainability information, instructions, promotional content or other digital experiences.
The drupa article describes the connection between digital watermarking and GS1 Digital Link, allowing product identification to connect the physical item with web-based information and potential Digital Product Passport applications.
This creates an interesting evolution in packaging.
The package no longer has to contain every piece of information physically. Instead, it can act as the gateway to a much larger digital information ecosystem.
For brands, that could provide more flexibility in how product information is delivered and updated. For consumers, it can make packaging more interactive without necessarily adding visible technology to the package itself.
A Role in Recycling and the Circular Economy
Invisible coding can also have applications after a product has reached the end of its useful life.
Automated recycling facilities increasingly rely on cameras and sorting systems to identify materials and direct them into appropriate recycling streams. Digital watermarks can potentially provide these systems with additional information about the packaging material.
The drupa article connects this concept with the HolyGrail 2.0 initiative, where digital watermarking is being explored as a technology for identifying packaging materials during automated sorting.
This illustrates an important change in how packaging can be designed.
Instead of considering only the manufacturing and retail stages, packaging can potentially carry information that remains useful throughout its entire lifecycle—from production and distribution to consumer use and recycling.
Invisible Codes and Packaging Security
The same characteristics that make digital watermarks useful for identification can also make them relevant to packaging security and authentication.
Premium products can be targets for counterfeiting, unauthorized distribution and supply-chain diversion. A machine-readable identifier embedded within the artwork can provide another layer of information for verifying and tracking products.
It is important to view digital watermarking as part of a broader security strategy rather than a standalone solution. Authentication can involve multiple technologies and processes, including serialization, secure databases, specialized inks, overt and covert security features, tamper-evident packaging and supply-chain monitoring.
Nevertheless, embedding machine-readable information directly into the printed design creates another tool for connecting the physical product with its digital identity.
What This Means for Digital Printing
For digital printers and packaging converters, the emergence of invisible codes highlights a broader industry trend: printing is becoming increasingly connected to data.
Digital printing already enables variable graphics, personalization, short production runs and on-demand manufacturing. Adding machine-readable information takes that concept further.
A digitally printed package could potentially contain unique or variable information while maintaining a consistent visual appearance across a production run.
This is particularly relevant for applications such as premium packaging, promotional packaging, limited editions, serialized products and personalized products.
It also demonstrates why modern digital printing workflows increasingly involve more than just a printer. Prepress software, RIP technology, colour management, cameras, inspection systems, databases and finishing equipment can all become components of the production ecosystem.
Precision Matters from Printing Through Finishing
As packaging becomes more sophisticated, finishing is becoming an equally important part of the equation.
Digital cutting, creasing, folding, die cutting, embellishment and inspection technologies can help converters turn digitally printed sheets into finished packaging while maintaining registration and repeatability.
For short-run and customized packaging, digital production can reduce the dependence on traditional tooling and make it easier to move from one package design to another.
This is where digital printing and digital finishing increasingly work together. The goal is not simply to print a package faster—it is to create a connected production workflow capable of handling variable information, specialized effects, customized designs and increasingly complex packaging requirements.
The Bigger Picture: Packaging as Data
Invisible digital watermarking represents one part of a much larger transformation taking place in packaging.
The package of the future may be expected to do much more than display a brand and protect a product. It can become an identifier, a source of information, a connection to digital content, a supply-chain tool and potentially a resource for automated recycling.
For print providers, this creates opportunities to look at packaging from a broader perspective.
The question is no longer simply, "What can we print?"
It is increasingly, "What information can the printed product carry, and what can that information enable?"
As digital printing, machine vision, connected workflows and automated finishing continue to develop, the printed package is becoming an increasingly intelligent part of the product lifecycle.
The Future of Connected Packaging
Invisible codes may be difficult for consumers to see, but their impact on packaging could be significant. By embedding information directly into artwork, brands can explore new ways to maintain premium visual design while supporting identification, traceability, digital engagement and recycling.
For print service providers and packaging converters, the opportunity lies in understanding how these technologies fit into the broader production workflow.
Digital printing is already making packaging more flexible, personalized and accessible for shorter runs. The next evolution is making that packaging more connected.
At Print Digital Solutions, we help businesses explore digital printing, UV printing, digital finishing and production technologies that can support the changing demands of modern print and packaging.
Source Credit
This blog summary is based on insights from the article "How Invisible Codes Are Changing Premium Packaging" published by drupa.
