Raman encoding for security labels: a review

Yu, Dong; Zhu, Wei; Shen, Ai-Guo

doi:10.1039/d3na00707c

Cited by 2 publications

(1 citation statement)

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“…(iii) The dependency of most structural color PUF labels on the angle of observation enhances key concealment to some extent; however, it also introduces potential interference and errors in real‐world applications. (iv) The recognition accuracy of PUF labels remains heavily reliant on algorithms, which currently suffer from a high error rate [119] . This necessitates improvements in identification precision to protect the interests of both manufacturers and consumers.…”

Section: Discussionmentioning

confidence: 99%

Structural color‐based physical unclonable function

Lin,

Shi,

et al. 2024

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Commodity fraud poses significant economic and public health risks while jeopardizing market stability. A promising avenue for addressing this issue involves the incorporation of physical unclonable function (PUF) in anti‐counterfeiting labels for commodity authentication purposes. PUFs are a large number of unbreakable security labels generated through a random process, which exhibit unique physical pattern responses that are impervious to replication. In particular, a novel kind of a PUF model, called structural color‐based PUFs, combing the structural color characteristics of angle‐dependent stability and brightness with unclonable property, offers unassailable encryption capabilities and serves as a formidable safeguard against forgery. This review undertakes a comprehensive summary of recent advancements in PUF technology leveraging structural color materials. Moreover, it provides a systematic description of the recognition and authentication technology employed in optical structural color PUFs. Finally, a prospective summary and outlook is proposed to explain existing challenges, and highlight potential developments in anti‐counterfeiting technology incorporating structural color PUF labels.

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Section: Discussionmentioning

confidence: 99%