The present invention is intended to control the reproduction, duplication, or charging of content recorded to a recordingreproducing apparatus using a storage-type medium. More specifically, there is provided a method that comprises detecting whether or not a device is producing an interrupt storm, and if the device is producing an interrupt storm, disabling the interrupt being generated by the device, and a system for implementing the method. It can be employed in sunscreen formulations. Based on the historical user interaction data, the sleep interval setting unit adjusts the sleep timer’s sleep interval. The mechanism changes the clearance to a second distance larger than the first distance.