LICENSE REGISTRATION DEVICE THAT REGISTERS LICENSE FOR USE OF PROGRAM ON DATA PROCESSING DEVICE

A program that becomes executable on a data processing device if license information is input to the data processing device within a limiting period set for the license information. The license information is provided by a license registration device after registration of a license for use of the program on the data processing device. The program includes storing time information in association with the license information, the time information indicating a cancelable time that arrives at or after an expiration time of the limiting period, accepting input of a disabling command, disabling use of the program, and providing, if the cancelable time has arrived and if the disabling command has been accepted, license cancel information necessary for canceling the license.