1. A mobile electronic device comprising a processor, wherein the processor executes a process comprising: referring to a storage that stores identification information on a per-application basis, the identification information indicating whether an authentication screen is to be screen-displayed in a foreground window of a display, and acquiring from the storage identification information that corresponds to a current application in response to a predetermined command; determining whether the authentication screen is to be screen-displayed in the foreground window on the basis of the acquired identification information; and controlling changing of a screen in the foreground window on the basis of a result of the determination.