In an image forming apparatus, a control device recognizes expansion and contraction of a pattern image based on an output of an image detector. The virtual security coprocessor is then transferred to a second processing system, for use by the second processing system. The electromagnetic wave absorber is located on at least one side surface of the rectangular multimode waveguide and is located at a predetermined gap from a core of the rectangular multimode waveguide. At least one of the stiffener and the load plate is formed to have a lateral-opened hollow frame by stamp of an elongated strip of metal. Upon receiving temporary control of the registered application, the application provisioning server can perform tasks such as license verification and other tasks before turning control of the application back to the mobile device.