Copy detection pattern

A Copy Detection Pattern (CDP) is a kind of noisy digital image which is printed on documents, labels or products. It is used to verify whether the item to which the CDP belongs is authentic, and enables to detect counterfeiting attempts.

A CDP is typically a binary random image generated using a cryptographic key, at the printer native resolution, such that the entropy of the image is maximal. Once printed, the CDP loses information.

CDPs are sometimes referred to as Copy Sensitive Graphical Codes, Printed Graphical Codes, or Copy-Detectable images or secure graphic.

The Copy Detection Pattern has been proposed as a means of providing a product authentication service using the Internet of Things^[1], as well as a means of securing identification documents^[2].

References

^ Chaves, Leonardo W. F.; Nochta, Zoltán (2010-07-12), "Breakthrough Towards the Internet of Things", Unique Radio Innovation for the 21st Century, Springer Berlin Heidelberg, pp. 25–38, ISBN 978-3-642-03461-9, retrieved 2020-04-19
^ Picard, Justin; Vielhauer, Claus; Thorwirth, Niels (2004-06-22). "Towards fraud-proof ID documents using multiple data hiding technologies and biometrics". Security, Steganography, and Watermarking of Multimedia Contents VI. SPIE. doi:10.1117/12.525446.

External links

www.example.com

[1] Chaves, Leonardo W. F.; Nochta, Zoltán (2010-07-12), "Breakthrough Towards the Internet of Things", Unique Radio Innovation for the 21st Century, Springer Berlin Heidelberg, pp. 25–38, ISBN 978-3-642-03461-9, retrieved 2020-04-19

[2] Picard, Justin; Vielhauer, Claus; Thorwirth, Niels (2004-06-22). "Towards fraud-proof ID documents using multiple data hiding technologies and biometrics". Security, Steganography, and Watermarking of Multimedia Contents VI. SPIE. doi:10.1117/12.525446.

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