Patent ID: 8826040

Claim:
A method for obtaining data allocated to a product, the product including machine-readable items of information applied to the product, the method comprising the steps: reading, with a data requester device, the machine-readable information applied to the product; requesting data allocated to the product by sending the read machine-readable information to a data service device, the data service device being included in a product information system in which the data service device stores allocated data for a plurality of products in encrypted form; receiving the data request with the data service device; determining the requested data with the data service device; sending the requested data from the data service device to the data requester device; wherein the data service device cannot decrypt said allocated data without the contents of a data request, wherein, during the step of determining the requested data, the data allocated to the product are generated by decrypting the stored encrypted data using the machine-readable items of information received with the data request and a decryption key, wherein the decrypted data are sent as the request data in the step of sending, wherein the data allocated to the product are divided in encrypted form into N data blocks 1 to N of encrypted information, N being an integer greater than 1, wherein the data blocks 1 to N include a main data set of encrypted information, which is held ready by the data service device, and a remainder data set of encrypted information, which is applied to the product as the machine-readable information, wherein the remainder data set of encrypted information applied to the product as the machine-readable information includes at least one data block removed from N data blocks, and wherein the data service device obtains at least one removed data block from the product for decrypting the allocated data.