Abstract: A wireless communications terminal prevents radio interferences caused by other wireless communications concurrent with a contactless communication. A wireless communications terminal receives, in a contactless communication, a command from a reader/writer via a second wireless communications section, and analyzes the received command. The wireless communications terminal controls a wireless communications control section to deactivate or temporarily deactivate the function of a first wireless communications section depending on the analysis of the command. After the function of the first wireless communications section is deactivated or temporarily deactivated, the wireless communications terminal accesses a memory area of an IC card microcomputer system as specified by the command to perform a contactless communication.

Abstract: The present invention aims to provide a wireless IC communication device that can prevent information from being read out without permission of an owner of items to each of which the wireless IC communication device is attached. The wireless IC communication device includes: a slot number obtainment unit (502) that obtains the number of time slots; a response slot information storage unit (504) that stores response slot information indicating a condition for sending an initial response to the reader/writer in the same time slot as the time slot in which at least one of other wireless IC communication devices sends an initial response; a response slot determination unit (501) that determines the time slot in which the initial response should be sent to the reader/writer; and a response unit (503) that sends the initial response to the reader/writer.

Abstract: The memory card with a simple configuration is provided with more reliable security. When the memory card receives the access request to the memory from the external connecting device, the access unit accesses the memory based on the access request. At this time, the switch composing the memory card indicates the propriety of the access right to the memory, and the access limitation unit limits that the access unit accesses the memory.

Abstract: The present invention provides a wireless communications terminal capable of preventing radio interferences from being caused by other wireless communications concurrent with a contactless communications. A wireless communications terminal (101) receives, in a contactless communications, a command from a reader/writer (105) via a second wireless communications section (209), and analyzes the received command. The wireless communications terminal (101) controls a wireless communications control section (210) to deactivate or temporarily deactivate the function of a first wireless communications section (208) depending on the analysis of the command. After the function of the first wireless communications section (208) is deactivated or temporarily deactivated, the wireless communications terminal (101) accesses a memory area of an IC card microcomputer system (300) as specified by the command to perform a contactless communications.

Abstract: A mobile terminal apparatus acquires resume information concerning an application which is being executed and identification information, which is selected by a user, related to the application. The identification information identifies a communications device communicating with the mobile terminal apparatus. A communication is performed with the communications device by using the identification information and whether the communication has been interrupted is determined. If it is determined that the communication has been interrupted, interruption information is generated including the identification information. The interruption information and the resume information concerning the application related to the interrupted communication are stored in association with each other.

Abstract: A contactless integrated circuit (IC) card for providing a high-grade random number with a simple configuration. A plurality of provisional random numbers are generated according to a part of calculations to be used for generation of a random number. The plurality of provisional random numbers generated are stored. A random number is generated on the basis of one of the provisional random numbers selected in sequential order.

Abstract: This invention provides a reader/writer, ID method and program comprising a response-detection unit of detecting normal responses and collisions from IC cards in response to a request; and a response-invalidation unit of sending a response-invalidation command, which is a command not to respond to requests in the future, to IC cards that sent normal responses when the response-detection unit received normal responses from IC cards even though collisions were detected.

Abstract: A mobile terminal apparatus (1) includes: a first acquisition section for acquiring resume information concerning an application which is being executed; a second acquisition section for acquiring identification information, which is selected by a user, related to the application which is being executed, the identification information identifying a communications device communicating with the mobile terminal apparatus; a communication processing section for performing a communication with the communications device by using the identification information acquired by the second acquisition section; a determination section for determining whether the communication by the communication processing section has been interrupted; a generation section for, if the determination section determines that the communication by the communication processing section has been interrupted, generating interruption information including the identification information; a storage section (22) for storing the interruption information

Abstract: The contactless IC card, the responding method, and the program that control the collision of response to the minimum, wherein the response judgment unit judges whether there is an initial response of the other contactless IC card at a specific time, and the response slot changing unit change the specific time based on the judgment result of the response judgment unit.

Abstract: The contactless IC card, the responding method, and the program that control the collision of response to the minimum, wherein the response judgment unit judges whether there is an initial response of the other contactless IC card at a specific time, and the response slot changing unit change the specific time based on the judgment result of the response judgment unit.

Abstract: The contactless IC card, the responding method, and the program that control the collision of response to the minimum, wherein the response judgment unit judges whether there is an initial response of the other contactless IC card at a specific time, and the response slot changing unit change the specific time based on the judgment result of the response judgment unit.

Abstract: The memory card with a simple configuration is provided with more reliable security. When the memory card receives the access request to the memory from the external connecting device, the access unit accesses the memory based on the access request. At this time, the switch composing the memory card indicates the propriety of the access right to the memory, and the access limitation unit limits that the access unit accesses the memory.

Abstract: This invention provides a reader/writer, ID method and program comprising a response-detection unit of detecting normal responses and collisions from IC cards in response to a request; and a response-invalidation unit of sending a response-invalidation command, which is a command not to respond to requests in the future, to IC cards that sent normal responses when the response-detection unit received normal responses from IC cards even though collisions were detected.

Abstract: The contactless IC card, the responding method, and the program that control the collision of response to the minimum, wherein the response judgment unit judges whether there is an initial response of the other contactless IC card at a specific time, and the response slot changing unit change the specific time based on the judgment result of the response judgment unit.

Abstract: The invention has an object to Provide an illegal access monitoring apparatus which prevents a predetermined memory area from illegal accessing by an application, and also prevents a reverse engineering, an IC card, and an illegal access monitoring method. The invention provides an illegal access monitoring apparatus of which an access monitoring means monitors an access to a predetermined memory area and of which a detection signal generating means generates an illegality detecting signal showing a presence of the illegal access on the basis of the monitoring result by the access monitoring means and illegal information, an IC card, and an illegal access monitoring method.

Abstract: Provision of a high-grade random number by means of a simple configuration enables to provide a contactless IC card, a responding method, and a program therefore; those can control the collision of the initial responses in minimum. The contactless IC card, the responding method and the program comprise the provisional random number generating means for generating a provisional random number according to a part of operations to be used for the generation of a random number, the provisional random number storage means for storing the provisional random number generated by the provisional random number storage means, and the random number generating means for generating a random number on the basis of the provisional random number at receiving the request from the reader/writer.