FIELD: engineering of devices used for marking objects, and for executing effective measures for counteracting unsanctioned reproduction.
SUBSTANCE: in methods and systems objects are marked with data, containing encoded information or electronic digital signature, by equipping an object with memory device or information carrier with aforementioned data, or aforementioned data are applied onto object. Authenticity check is performed by means of identification device, made with possible transformation of data to messages, which are checked using cryptographic algorithms.
EFFECT: impossible forgery or replacement of marked objects.
8 cl, 3 dwg
