Patent ID: 11876894
Assignee: ROCHE DIABETES CARE, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A system for controlling recall of a product in a computer network, comprising:
a computer network having at least first and second data processing devices each having a processor and storage;
a pair of product keys assigned to the product including a private product key and a public product key;
a pair of product recall keys assigned to a product recall, including a private product recall key and a public product recall key;
wherein the first data processing device assigned to a manufacturer in the computer network is configured to:

(a) print a matrix code on the product comprising the private product key;
(b) generate a recall transaction assigned to the product including the public product recall key and indicating a recall request for the product; and
(c) sign the recall transaction with the private product recall key and a private manufacturer key;
wherein the second data processing device assigned to a customer in the computer network is configured to scan the printed matrix code on the product by a scan device and provide the public product recall key by decrypting the printed matrix code;

wherein the second data processing device is further configured to:
(d) receive the recall transaction;
(e) decrypt the recall transaction by applying the public product recall key;
(f) generate recall status output data indicating the recall request.