In traditional secure design/printing, all prints are identical and authentication is based on differences from the original print. In most cases, security design is connected to some key security elements such as guilloche, microtext, and latent images. These elements protect the product only if they are designed and printed based on strict rules. These rules are not flexible, they are limited by the existing technologies of the commercial market.
In the case of digital security printing, all prints are different and authentication is based on coded personal information that has to be decoded and identified. It is also important to note that security features should not be borrowed from traditional security printing but should be developed specifically for digital printing.
One of the biggest advantages of digital printing is that all the documents can be personalised, not only with a simple serial number but in a very complex way. We can personalise the design as well as any of the printed elements.
This paper presents real-life cases of how different combinations of design and personalisation can solve the challenges of authenticating and identifying secure documents.
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