Abstract: A posting right giving device acquires region information indicating a region designated by an establisher requesting creation of a community. The posting right giving device stores the acquired region information and community identification information for identifying the community in association with each other in a storage. The posting right giving device acquires positional information indicating a position of a terminal device used by a user different from the establisher. The posting right giving device executes, when the position indicated by the acquired positional information is included in the region indicated by the stored region information, processing for giving the user a right to post information to the community identified with the community identification information stored in association with the region information. The right to post information allows the user to post the information regardless of whether the terminal device is located within the region.

Abstract: A posting right giving device acquires region information indicating a region designated by an establisher requesting creation of a community. The posting right giving device stores the acquired region information and community identification information for identifying the community in association with each other in a storage. The posting right giving device acquires positional information indicating a position of a terminal device used by a user different from the establisher. The posting right giving device executes, when the position indicated by the acquired positional information is included in the region indicated by the stored region information, processing for giving the user a right to post information to the community identified with the community identification information stored in association with the region information. The right to post information allows the user to post the information regardless of whether the terminal device is located within the region.

Abstract: Provided is an e-commerce system capable of preventing fraudulent orders by third parties and performing smooth operation of item orders. An authentication method of the e-commerce system includes a receiving step of receiving a procedure request for performing an ordering procedure from a user device, and a first screen sending step of sending an authentication screen or a review screen to the user device in accordance with communication control information that is stored in the user device and included in the procedure request. The authentication method also includes a second screen sending step of obtaining the authentication information that is input in the authentication screen, causing the user device to store the communication control information in accordance with the obtained authentication information, and sending the review screen to the user device.

Abstract: In a storage device of one embodiment, a record acquisition unit acquires each of records stored in a plurality of database devices as a file containing items contained in the record. The items contained in the file includes first information for specifying a record, second information indicating a degree of newness of the record and third information for specifying a database device storing the record. The file has a file name able to be specified based on the first information. A storage unit stores the file. A receiving unit receives the first information contained in any of the records stored in the plurality of database devices. A retrieval unit retrieves from the storage unit a file specified based on the first information received by the receiving unit. A file transmitting unit transmits the file retrieved by the retrieval unit to the server device.