Signature of Moulded Article
First Claim
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1. A method of authenticating an article comprising:
- generating a signature from an article using a method of directing coherent radiation sequentially onto each of plurality of regions of a surface of the article;
collecting a set comprising groups of data points from signals obtained when the coherent radiation scatters from the different regions of the article, wherein different ones of the groups of data points relate to scatter from the respective different regions of the article; and
determining a signature of the article from the set of data points;
comparing the signature for the article to a stored signature for a mould used to produce articles; and
determining an authentication result based upon a comparison result between the article signature and stored mould signature.
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Abstract
A method of authenticating an article comprises generating a signature from intrinsic surface structure of an article, comparing the signature for the article to a stored signature for a mould used to produce articles, and determining an authentication result based upon a comparison result between the article signature and stored mould signature.
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Citations
14 Claims
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1. A method of authenticating an article comprising:
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generating a signature from an article using a method of directing coherent radiation sequentially onto each of plurality of regions of a surface of the article;
collecting a set comprising groups of data points from signals obtained when the coherent radiation scatters from the different regions of the article, wherein different ones of the groups of data points relate to scatter from the respective different regions of the article; and
determining a signature of the article from the set of data points;comparing the signature for the article to a stored signature for a mould used to produce articles; and determining an authentication result based upon a comparison result between the article signature and stored mould signature. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for authenticating an article comprising:
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a signature generator that directs coherent radiation sequentially onto each of plurality of regions of a surface of the article;
collects a set comprising groups of data points from signals obtained when the coherent radiation scatters from the different regions of the article, wherein different ones of the groups of data points relate to scatter from the respective different regions of the article; and
determines a signature of the article from the set of data points;a comparator that compares the signature for the article to a stored signature for a mould used to produce articles; and a determiner that determines an authentication result based upon a comparison result between the article signature and stored mould signature. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for authenticating an article comprising:
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a step for generating a signature from an article using a method of directing coherent radiation sequentially onto each of plurality of regions of a surface of the article;
collecting a set comprising groups of data points from signals obtained when the coherent radiation scatters from the different regions of the article, wherein different ones of the groups of data points relate to scatter from the respective different regions of the article; and
determining a signature of the article from the set of data points;a step for comparing the signature for the article to a stored signature for a mould used to produce articles; and a step for determining an authentication result based upon a comparison result between the article signature and stored mould signature.
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14. A method of generating a collective signature for articles produced in a mould, the method comprising:
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for each of a plurality of articles produced from the mould, generating a signature from the article using a method of directing coherent radiation sequentially onto each of plurality of regions of a surface of the article;
collecting a set comprising groups of data points from signals obtained when the coherent radiation scatters from the different regions of the article, wherein different ones of the groups of data points relate to scatter from the respective different regions of the article; and
determining a signature of the article from the set of data points;comparing the signatures produced from the plurality of articles to determine a set of common signature elements; creating a collective signature from the set of common elements.
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Specification