Abstract:
The present invention improves user experience when a reader/writer (5) and a portable terminal (7) engage in near field communication by selecting any of two or more communication modes in order to link an image forming device (3) and the portable terminal (7) using near field communication. When a log-in screen is displayed on a display unit (403) of the image forming device (3), the reader/writer (5) and the portable terminal (7) are automatically set to a read communication mode.