FIELD: means for branding industrially or otherwise produced commodities, parts, or structures of all kinds for authenticating them. SUBSTANCE: method and system are designed to provide products with data incorporating coded information or electronic digital signature branded either on commodity proper or on label or any other data medium attached to commodity, or by entering data in memory device meant for mentioned commodity. Authentication check is made by means of identification device designed for converting mentioned data recorded in message which are checked up using cryptographic algorithm; any users concerned may familiarize themselves with check results. EFFECT: provision for making it impossible to counterfeit or replace goods, or make any other unauthorized actions. 99 cl, 3 dwg
