SERVER FOR LOTTERY OPERATION SYSTEM AND PRINTED MEDIUM WITH LOTTERY INFORMATION PRINTED THEREON

摘要

PROBLEM TO BE SOLVED: To solve such problems that there is the possibility of inputting lottery numbers at random because only a 'lottery ID' attached to commodity is inputted in a conventional 'lottery system' utilizing a web page and that the 'lottery system' is not adaptable to such a system that associates a plurality of lotteries to provide a user with a service even though the system allows the user to input the 'lottery ID' a plurality of times to perform a lottery a plurality of times. SOLUTION: A server 20 of a 'lottery operation system' receives a lottery number 3 of a lottery 1 from a user terminal 11 through a web page 21 to judge whether or not the lottery is won, and in the case the lottery is won, further receives information of a check ID 4 from the terminal 11 of the user 10 to check the information. If the lottery is 'unsuccessful' information of commodity purchase history is registered in a database on the basis of a user ID preregistered by the user 10, and a winning probability is increased in accordance with the information of commodity purchase history in performing the next 'lottery' of the user 10.