O-PUR Project > Implementation concept
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The protection concept is subdivided into production and examination of the security mark as presented in Figure 2. The proprietary matrix code DataGrid contains encrypted product data and the embedded copydetect pattern NanoGrid, which is treated as an artificial fingerprint and used for authentication (copydetection) without database access.
After printing the code on a package or label, the unique fingerprint EpiCode naturally occurs as a result of the interaction between paper and ink. If an offset printing processis used, the characteristic signature of the printing plate ClusterCode appears as an additional individual feature. EpiCode and ClusterCode can be used for authentication in the supply chain only if captured and stored in a database during the production process.
Overall security concept for product protection
fig. 2: Overall security concept for product protection based on identification and authentication
more >>  Matrix codes
Project documentation
(Band 2) (in german) you find here: VDMA online Shop:
Karlsruher Institut für Technologie PTKA