FIELD: entertainment engineering. SUBSTANCE: method involves marking wares to be sold with codes composed of symbols each positioned in some sequential order one after another, storing the codes in server database, forming and saving questions and answers to them in the server database, producing random code having symbol number and kinds corresponding to the number and look of the sold ware code symbols, saving the random code into the server, saving user device data into the server database, identifying the user, receiving data from user device and storing user codes into the server, checking user code relevancy, comparing the random code to the user code on equal symbols position order in random code to the equal symbols position order in the user code, determining the winner and prize. Several answers are assigned to every question of which only one is the right one and user code should match the code of one of sold wares. EFFECT: wide range functional features. 2 dwg
