SALES PROMOTION SUPPORT DEVICE, SALES PROMOTION SYSTEM AND SALES PROMOTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sales promotion support device, sales promotion support system and sales promotion support method capable of efficiently performing a sales promotion while ensuring personal information. SOLUTION: This sales promotion support device comprises a database storage part 40 for storing member data 45 consisting of two or more pieces of member information and sales data 46 formed of two or more pieces of sales information in conformation to encrypted member numbers formed of the encrypted member numbers of credit cards; an encrypted member number extracting means for retrieving the member information and the sales information under a prescribed retrieval condition to extract the encrypted member number conformed to the retrieved information; and a case number acquiring means for acquiring the case number of the extracted encrypted member numbers.