A portable terminal and a computer readable storage medium are described. According to one implementation, a portable terminal includes, a storage section, an imaging section, a notifying section and a control section. The storage section stores item identification information to identify an item with a RFID tag attached corresponded with tag position information which shows a position of the RFID tag. The control section retrieves item identification information of an item corresponding to image data imaged by the imaging section from the stored item identification information, and allows the notifying section to notify the tag position information corresponding to the retrieved item identification information.