Abstract: A communication system includes a plurality of apparatuses each performing wireless communication with a mobile apparatus. Each of the plurality of apparatuses performs authentication processing for determining whether the mobile apparatus is a mobile apparatus registered beforehand. At least one apparatus of the plurality of apparatuses performs registration processing for obtaining mobile key information to be used for the authentication processing from the mobile apparatus and registering the mobile key information, and sharing processing for transmitting the mobile key information obtained by the registration processing to the other apparatus.

Abstract: A polling processing unit executes a polling process for detecting a device that performs NFC communication. An NFC communication processing unit executes a communication process of performing NFC communication with a mobile device detected by the polling process. Power consumption associated with execution of the communication process is larger than power consumption associated with execution of the polling process. When authentication of the mobile device by an authentication processing unit is completed, or when the execution of the communication process continues for a prescribed time period, the NFC communication processing unit executes a stop process of stopping the communication process until the execution of the communication process is permitted.

Abstract: A communication system includes a mobile device and an apparatus. The apparatus obtains unique data from the mobile device by using a common key while the common key is stored in the mobile device, generates a unique key by using the obtained unique data, stores the generated unique key as a service key in the apparatus, and transmits the generated unique key to the mobile device. When the mobile device receives the unique key from the apparatus while the common key is stored in the mobile device, the mobile device rewrites a service key stored in the mobile device from the common key to the unique key.

Abstract: NFC standards include a plurality of types (Type A, Type B and Type F). The communication controller performs a polling so as to detect a portable device that communicates in accordance with the NFC standards. The memory stores region information indicating a region where a vehicle is to be used. Based on the region information, the communication controller stops the polling of a type among the plurality of types that is not used in the region.

Abstract: A communication control system includes an acquisition unit that obtains setting information when the setting information is input by a user. The setting information is related to a restriction on actuation of an operation subject that is actuated or allowed to be actuated through authentication communication performed with a terminal. The communication control system further includes a restriction unit that restricts actuation of the operation subject when a condition in the setting information is satisfied.

Abstract: NFC standards include a plurality of types (Type A, Type B and Type F). The communication controller performs a polling so as to detect a portable device that communicates in accordance with the NFC standards. The memory stores region information indicating a region where a vehicle is to be used. Based on the region information, the communication controller stops the polling of a type among the plurality of types that is not used in the region.

Abstract: A communication system includes a plurality of apparatuses each performing wireless communication with a mobile apparatus. Each of the plurality of apparatuses performs authentication processing for determining whether the mobile apparatus is a mobile apparatus registered beforehand. At least one apparatus of the plurality of apparatuses performs registration processing for obtaining mobile key information to be used for the authentication processing from the mobile apparatus and registering the mobile key information, and sharing processing for transmitting the mobile key information obtained by the registration processing to the other apparatus.