Patent ID: 11875589
Assignee: SICPA HOLDING SA
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 11:
12. The method according to claim 10, wherein the reference aggregated digital signature associated with the batch of original articles is either published in a media accessible to the user, or stored in a searchable aggregated signature database accessible to the user, or stored in a blockchain, or in a database secured by a blockchain, accessible to the user,
wherein the marked original article further comprises aggregated signature access data marked thereto and containing information sufficient to access to the reference aggregated digital signature corresponding to the batch of original articles, said information being a link to an aggregated signature acquisition interface of, respectively, one of the following:
the media wherein the reference aggregated digital signature is published, the media being accessible to the user via said aggregated signature acquisition interface operable to receive from the user an aggregated signature request containing article data, or a digital signature of said article data, obtained from a security marking of a marked original article, and send back a reference aggregated digital signature of associated batch;
the searchable aggregated signature database wherein the reference aggregated digital signature is stored, the aggregated signature database being accessible to the user via said aggregated signature acquisition interface operable to receive from the user an aggregated signature request containing article data, or a digital signature of said article data, obtained from a security marking of a marked original article, and send back a reference aggregated digital signature of associated batch;
the blockchain, respectively the database secured by the blockchain, wherein the time-stamped aggregated digital signature is stored, the blockchain, respectively the database secured by the blockchain, being accessible to the user via said aggregated signature acquisition interface operable to receive from the user an aggregated signature request containing article data, or a digital signature of said article data, obtained from a security marking of a marked original article, and send back a reference aggregated digital signature of associated batch,
and the imager is further equipped with a communication unit operable to send and receive back data via a communication link, comprising the steps of:
reading the aggregated signature access data marked on the test object with the imager;
sending with the communication unit via the communication link an aggregated signature request to said aggregated signature acquisition interface containing the article data, or a digital signature of said article data, obtained from the security marking on the test object, and receiving back a corresponding reference aggregated digital signature of an associated batch; and
storing the received aggregated digital signature in the memory of the imager,
which precede the step of acquiring the digital image of the security marking.