Smartphone Authentication of Unclonable Anticounterfeiting Labels based on a Microlens Array atop a Microphosphor‐Doped Layer Article Swipe
Vinay Kumar
,
Fabrizio Gota
,
Julien Neyret
,
Ngei Katumo
,
Aditya Chauhan
,
Stephan Dottermusch
,
Bryce S. Richards
,
Ian A. Howard
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/admt.202201311
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/admt.202201311
A phosphor‐particle‐loaded microlens array on a polymer substrate offers an attractive unclonable anticounterfeiting label design. A random pattern of bright emission points is created due to the random coincidences of light focused by a microlens with an underlying phosphor microparticle. The change of the bright point patter with the angle of the incident light (owing to a shift in the locations of the focal points) makes the labels unclonable. This work examines the authentication of such labels using a single smartphone. The smartphone flashlight provides illumination whereas the camera is used for detection (optical filters prevent capture of scattered source light). A 196‐bit binary string is created from the captured images to identify which lenses in the 14 × 14 array create bright emission points for a given position of the smartphone. The classification of test and reference images as matching or not is achieved with >99% confidence, as is a 1 cm tolerance for the positioning accuracy of the smartphone. Moreover, authentication is possible for different distances between flash and camera provided this is less than 3 cm. In summary, the present work quantifies the good potential of the microlens array microphosphor unclonable label concept for authentication using a smartphone.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/admt.202201311
- OA Status
- hybrid
- Cited By
- 8
- References
- 17
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4318318005
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4318318005Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/admt.202201311Digital Object Identifier
- Title
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Smartphone Authentication of Unclonable Anticounterfeiting Labels based on a Microlens Array atop a Microphosphor‐Doped LayerWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-01-27Full publication date if available
- Authors
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Vinay Kumar, Fabrizio Gota, Julien Neyret, Ngei Katumo, Aditya Chauhan, Stephan Dottermusch, Bryce S. Richards, Ian A. HowardList of authors in order
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https://doi.org/10.1002/admt.202201311Publisher landing page
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://doi.org/10.1002/admt.202201311Direct OA link when available
- Concepts
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Microlens, Authentication (law), Computer science, Flash (photography), Artificial intelligence, Computer vision, Optics, Physics, Lens (geology), Computer securityTop concepts (fields/topics) attached by OpenAlex
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8Total citation count in OpenAlex
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2025: 2, 2024: 3, 2023: 3Per-year citation counts (last 5 years)
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17Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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| publication_date | 2023-01-27 |
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