PURPOSE: An anti-piracy method of a program is provided to reduce the expenses by preventing a duplicated investment, and by executing the control of an illegal copy. CONSTITUTION: A software company makes a request for controlling paricy. The company informs an agency company of information on products and user authentication numbers. The agency company executes the request of the manufacturing company(60). The agency company executes the benefit for legal users(63). The agency company executes the business according to regulations of the software manufacturing company(65). The price is paid in the compensation of executing the business for the manufacturing company.
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