Abstract: According to an embodiment, an IC card associated with a parent IC card includes a sensor, a first storage unit, a second storage unit, a communication unit, and a processor. A sensor is configured to acquire biological information. The first storage unit is configured to store a template with which the biological information is verified. The second storage unit is configured to store second data related to first data stored in the parent IC card. The communication unit is configured to transmit and receive data to and from a host device. The processor is configured to authenticate a user based on a verification result of the biological information and the template in accordance with a command from the host device, and transmit at least some of the second data to the host device if the authentication of the user is successful.

Abstract: According to an embodiment, a portable electronic device includes a biometric sensor, a communication interface, a first memory, a second memory, and a processor. The biometric sensor acquires biological information of a person. The communication interface communicates with a host device. The first memory stores biological information of a registrant. The second memory stores a password. According to a command for requesting biometric authentication received from the host device through the communication interface, the processor executes biometric authentication using the biological information acquired by the biometric sensor and the biological information stored in the first memory and sets a verification state of the password stored in the second memory to a verified state if the biometric authentication is successful.

Abstract: According to an embodiment, an IC card includes a communication interface and a processor. The communication interface communicates with an IC card processing apparatus. The processor transmits extended format support information indicating whether an extended format is supported for each of commands to the IC card processing apparatus.

Abstract: An IC card include a communication unit, a storage unit, a biometric information acquisition unit, a degree of similarity calculation unit, and a response control unit. The communication unit communicates with an external device. The storage unit stores a first biometric information in advance. The biometric information acquisition unit acquires a second biometric information read from a humanbeings' biological body. The degree of similarity calculation unit calculates a degree of similarity between the first biometric information and the second biometric information. The response control unit which transmits information indicating a level of the degree of similarity to the external device by the communication unit.

Abstract: A portable electronic device is provided with a storage section which stores various pieces of information and a transmitter/receiver section which transmits and receives data to and from external equipment. It is determined whether or not data paired with write data contained in a write command is stored by the storage section when the write command is received by the transmitter/receiver section, the write data is written to the storage section if it is concluded that the data paired with the write data contained in the write command is stored by the storage section, and the transmitter/receiver section is caused to transmit a result of determination on abnormality to the external equipment if it is concluded that the data paired with the write data contained in the write command is not stored by the storage section.

Abstract: A flag which is set to the on state when a process of writing data as a data file into a storage area which is permitted to be written only once results in failure is previously set in a data memory of an IC card. When a flag of a to-be-written EF specified by a write binary command is set to the on state, a control element of the IC card compares received data to be written to the EF with data which is already written to the data storage area of the EF. Based on the comparison result, the control element of the IC card rewrites data in the storage area in which the compared data items do not coincide with each other into the received data.

Abstract: A portable electronic device is provided with a storage section which stores various pieces of information and a transmitter/receiver section which transmits and receives data to and from external equipment. It is determined whether or not data paired with write data contained in a write command is stored by the storage section when the write command is received by the transmitter/receiver section, the write data is written to the storage section if it is concluded that the data paired with the write data contained in the write command is stored by the storage section, and the transmitter/receiver section is caused to transmit a result of determination on abnormality to the external equipment if it is concluded that the data paired with the write data contained in the write command is not stored by the storage section.

Abstract: In a portable electronic device, pointer information used to access files which are divided into a plurality of record data areas is held for each logical channel, and when a file selection command which specifies a logical command is received from the exterior, access to the file is controlled based on pointer information corresponding to the logical channel specified by the file selection command.

Abstract: In a portable electronic device, pointer information used to access files which are divided into a plurality of record data areas is held for each logical channel, and when a file selection command which specifies a logical command is received from the exterior, access to the file is controlled based on pointer information corresponding to the logical channel specified by the file selection command.

Abstract: A portable data processing device is disclosed which, when connected to and activated by an external device, transmits initial response data to the external device, performs a self-diagnosis of whether the portable data processing device operates properly, and then receives a command from the external device and performs corresponding processing to the received command.

Abstract: A data processing apparatus for IC card media. The data processing apparatus has a function for holding one of the portable media and supplying a clock signal to the held medium for the purpose of establishing communication with the portable medium in the synchronous communication protocol, a function for determining whether the held medium uses the synchronous communication protocol or the asynchronous communication protocol in accordance with data transmitted from the held medium in response to the clock signal, a function for continuing a subsequent communication with the held medium in the synchronous communication protocol when a determination has been made that the synchronous communication protocol is used, and a function for supplying a clock signal to the held medium of the purpose of establishing communication with the portable medium in the asynchronous communication protocol when a determination has been made that the asynchronous communication protocol is used.

Abstract: Password identification information for identifying a password for key verification is set for each of a plurality of applications. A current password storage unit for storing a password which has recently been input and the password identification information of the password is arranged. When one application is selected, password identification information corresponding to the application is verified with the password identification information stored in the current password storage unit. If the two password identification information match, key verification is performed using the password in the current password storage unit. With this operation, a plurality of data can be read out by performing the password input operation once. One or two select keys are arranged in place of a ten-key pad. By repeating an operation using the select keys and the enter key, a password having a plurality of digits is input. Therefore, the password can be input using a minimum number of keys.

Abstract: An apparatus for performing processing on an integrated circuit medium includes a mechanism for performing transfer to and from the integrated circuit medium held therein, and a controller adapted to supply a power supply voltage to the integrated circuit medium after a predetermined condition has been satisfied with the integrated circuit medium set in the apparatus and to stop the supply of the power supply voltage when predetermined processing is completed on the integrated circuit medium.

Abstract: A data processing apparatus for an IC card includes an interface section for receiving and accessing an integrated circuit medium, a first application function for performing data processing for the integrated circuit medium on the basis of the first application, a second application function for performing data processing on the basis of the second application, and a control unit for selecting one of the first and second application functions on the basis of an instruction from a keyboard and controlling it so as to perform data processing.

Abstract: A portable electronic device contains a memory having first to third memory areas and a CPU. A plurality of identification number data is stored in the first memory area. The portable electronic device receives identification number data from an external device. The CPU verifies the identification number data received by this device with the identification number data stored in the first memory area. Verification results are then stored in the second memory area. The portable electronic device also receives instruction data from the external device. Control data corresponding to the instruction data and representing a plurality of identifiers are stored in the third memory area. Each identifier indicates whether or not identification number verification is required and whether complete or partial identification number verification is required.

Abstract: After registration of a subprogram is completed, a flag indicating that the subprogram has been registered is set. The flag is referred to in response to a subprogram registration request from an IC card reader/writer. Registration of the subprogram is performed only when the flag is not set. A BCC of the subprogram is calculated and stored in a memory upon subprogram registration. When the registered subprogram is to be executed, a BCC of the subprogram read out from the memory is calculated and compared with the BCC stored in the memory. The subprogram is executed only when the two BCCs coincide with each other. If the subprogram has been registered, a BCC check is performed for the registered subprogram. If the BCC check indicates an error, registration of the subprogram is enabled.

Abstract: A data transmission arrangement for a portable data storage medium, in which messages are transmitted between an external device and a portable data storage medium at a plurality of times in response to one readout command output from the external device. When malfunction occurs during the processing in the portable data storage medium, the portable data storage medium outputs an abnormality response to the external device, and then receives a continuous data demand command from the external device. Thereafter, a status data different from the status data included in the first message is sent from the portable data storage medium to the external device. The external device recognizes this sent status data. Thereafter, the data transmission started in response to one readout command is not discontinued and additional data continuous to be transmitted.