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

Claim 6:
7. A method for controlling recall of a product in a computer network, comprising:
providing a pair of product keys assigned to the product including a private product key and a public product key;
providing 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 pair of product recall keys is separate and distinct from the pair of product keys;
in a first data processing device:
(a) generating a recall transaction assigned to the product including the public product recall key and indicating a recall request for the product; and
(b) signing the recall transaction with the private product recall key and a private manufacturer key; and
scanning a printed matrix code on the product by a third scan device connected to a fourth data processing device; and
in the fourth data processing device that is assigned to a customer,
(c) providing the public product recall key by decrypting the printed matrix code.