Abstract: A client terminal transmits a signal related to an authentication request to a service delivery server through a browser every time an application is started by an instruction from a user. Upon receiving the authentication request from the client terminal, an authentication server executes authentication processing in cooperation with the service delivery server based on authentication information of an application of the client terminal, a session of which has been established, and stored in the service delivery server, and user information related to the user stored in the authentication server.

Abstract: One object is to shorten the time required for a terminal to display a screen including images. A server according to an embodiment includes: a storage unit for storing information; and a display control unit for causing, in response to a display request for displaying the screen from the terminal, the terminal to display the screen including the images corresponding to the image files by using the image files stored on the storage of the terminal or the image files stored on the storage of the server selected in accordance with a predetermined selection condition based at least on the throughput of the terminal and the communication capacity between the server and the terminal.

Abstract: Service recommendation among users can be promoted while refraining from excessive recommendation activity. A server according to an embodiment includes an information storage unit, a screen display control unit controlling displaying screens on a terminal device, and an offering request receiving unit receiving an offering request of recommendation information. The offering request is executed without specifying a recommendation destination user.

Abstract: A server 10 providing predetermined services to user terminals over a network is equipped with: an invitation processing module 15 that configures invitation content information in response to an invitation request from the terminal of an invitor user of above-described service, and a benefit-providing module 17 that compares content information uploaded from the terminal of the invitee user with content information configured in the above-described invitation processing module 15 when the invitee user invited by the above-described invitor user registers with the service, and awards benefits to the above-described invitor user and/or the above-described invitee user based on the result of this comparison.

Abstract: A server 10 that provides a predetermined service to user terminals 50 over a network 60 registers a user in response to a registration request addressed from a user terminal 50 to the above-mentioned service, and, at the time of registration, generates content information used for re-registration and transmits it to the user terminal 50 while determining whether or not re-registration should be performed by matching content information transmitted from a given terminal against the generated content information.

Abstract: One object is to shorten the time required for a terminal to display a screen including images. A server according to an embodiment includes: a storage unit for storing information; and a display control unit for causing, in response to a display request for displaying the screen from the terminal, the terminal to display the screen including the images corresponding to the image files by using the image files stored on the storage of the terminal or the image files stored on the storage of the server selected in accordance with a predetermined selection condition based at least on the throughput of the terminal and the communication capacity between the server and the terminal.

Abstract: One object is to provide a simpler setup for a plurality of application programs to share information required for logins with ensured security. In accordance with one aspect, an application program according to an embodiment includes: an authentication information requesting module configured to request an authentication token from another application program used for a login included in login history; a login requesting module configured to request a login to a server using the obtained authentication token; an authentication information storing module configured to newly obtain an authentication token in response to a login and store the authentication token in a storage area for the application program; a login history recording module configured to record into the login history a login using the application program; and an authentication information providing module configured to provide to the other application program the authentication token stored in the storage area for the application program.

Abstract: A server according to one embodiment more appropriately sets the allocated amount of benefit for a service using an application.

Abstract: A network system according to the present invention includes a service providing server that provides an application service, a user terminal used by a user when using the application service, and a proxy server intervening between the service providing server and the user terminal. The user terminal includes a whitelist for an application in which at least a URL of the proxy server is described. The user terminal accesses the service providing server over the network and provides an application service to the user by starting the application program. When an access request to a URL of an access target specified by the application program is made during the provision of the application service, the user terminal compares the URL of the access target with a URL described in the whitelist for the application.

Abstract: A client terminal transmits a signal related to an authentication request to a service delivery server through a browser every time an application is started by an instruction from a user. Upon receiving the authentication request from the client terminal, an authentication server executes authentication processing in cooperation with the service delivery server based on authentication information of an application of the client terminal, a session of which has been established, and stored in the service delivery server, and user information related to the user stored in the authentication server.

Abstract: An object of the invention is to cause a user to efficiently create an application program on a web browser. A network system according to the invention includes: a service-provider server that provides a browser service capable of running in a web browser; a user terminal; and an application-creation support server. The application-creation support server automatically generates an application file by using an application-creation tool, the application file being for causing the browser service provided by the service-provider server to run in the application program. The application-creation support server changes a layout file included in the application file, based on an editing operation input by the user. The application-creation support server generates an executable file of the application program by packaging a plurality of files including the layout file that has been changed, based on the generated application file.

Abstract: A network system according to the present invention includes a service providing server that provides an application service, a user terminal used by a user when using the application service, and a proxy server intervening between the service providing server and the user terminal. The user terminal includes a whitelist for an application in which at least a URL of the proxy server is described. The user terminal accesses the service providing server over the network and provides an application service to the user by starting the application program. When an access request to a URL of an access target specified by the application program is made during the provision of the application service, the user terminal compares the URL of the access target with a URL described in the whitelist for the application.