The present application is to make an information storage device (card) with a plurality of communication functions perform a process by one of the communication functions in cooperation with another process performed by the other communication function. A card 30 includes contactless communication means and contact communication means so as to execute only one of a process using contactless communication and a process using contact communication at one and the same time. The card 30 further includes processing means 33 and status change means 31. The processing means 33 executes processes by contactless communication and contact communication. The status change means 31 gives a response, in terms of an execution status of a contactless communication process, when the status change means 31 receives a check request command for inquiring a condition of the contactless communication process from a card supervision portion 12 through the contact communication means. The status change means 31 sends the processing means 33 an instruction to change the process of the processing means 33 to a contact communication process if the processing means 33 is not engaging in execution of the contactless communication process when the status change means 31 receives a change request command for giving an instruction to change the process of the processing means 33 to the contact communication process from the card supervision portion 12. It is therefore possible to make the card perform the process by contact communication in cooperation with the process using contactless communication.