Server system, communication system, communication terminal device, program, recording medium, and communication method

Abstract

Provided is a network system which improves a security and prevents illegal use when providing services such as Internet banking services. A random graphic table (RMT) is issued to a user, and having text characters which a user inputs and figures which corresponds to the text characters, respectively, and which is unrelated to the text characters such as a photograph. A banking organization server ( 30 ) manages random graphic table data corresponding to the random graphic table (RMT), distributes data for input including a portion of the random graphic table data to a communication terminal device ( 10 ) when information is inputted, and executing a specification of information to be specified while comparing the data for input with the random graphic table (RMT).

1 . A server system for executing a given process using individual data being predetermined for each user that has a communication terminal device and having entry target characters entered by the user and figures pre-allocated to the respective entry target characters that are associated with each other, comprising:
 an acquiring processer that acquires, from the communication terminal device, marker information that corresponds to a figure entered by an input user based on data for entry, the data for entry including: the figures of the individual data that is corresponding to the input user;   and the marker information that is used when the figures are displayed at the communication terminal device of the input user;   a determining processer that determines the figure entered by the input user based on the data for entry of the input user and the acquired marker information; and   a specific processer that specifies the entry target character to be specified based on the determined figures and the individual data of the input user, and that executes the given process based on the specified entry target character.   
     
     
         2 . The server system according to  claim 1 , further comprising
 a distributer that distributes the data for entry to the relevant communication terminal device, and   wherein the determining processer determines the figure entered by the input user based on the distributed data for entry and the acquired marker information.   
     
     
         3 . The server system according to  claim 2 , wherein
 the distributer generates the data for entry of the input user based on the individual data of the input user, and distributes the generated data for entry to the communication terminal device.   
     
     
         4 . The server system according to  claim 1 , wherein
 the individual data has each of the entry target characters that corresponds to a plurality of the figures, respectively, and   the data for entry does not include the plurality of the figures corresponding to the same entry target character.   
     
     
         5 . The server system according to  claim 1 , wherein
 the individual data has the entry target characters that is different from each other and each of the entry target characters corresponds to a plurality of the figures, respectively, and   the data for entry has each of the figures corresponding to the single entry target character that is different from each other, respectively.   
     
     
         6 . A communication system, comprising:
 a server system according to any one of  claim 1 ; and   a plurality of communication terminal devices that communicates with and is connected to the server system via a network.   
     
     
         7 . A executing method for executing a given process using individual data being predetermined for each user that has a communication terminal device and having entry target characters entered by the user and figures pre-allocated to the respective entry target characters that are associated with each other, comprising:
 acquiring, from the communication terminal device, marker information that corresponds to a figure entered by an input user based on data for entry, the data for entry including: the figures of the individual data that is corresponding to the input user; and the marker information that is used when the figures are displayed at the communication terminal device of the input user;   determining the figure entered by the input user based on the data for entry of the input user and the acquired marker information; and   specifying the entry target character to be specified based on the determined figures and the individual data of the input user, and that executes a given process based on the specified entry target character.   
     
     
         8 . A communication terminal device that is connected to a server system that executes various processes, via a network and that deliver various services to a user while they transmit/receive data to/from the server system, the communication terminal device comprising:
 an acquiring processer that acquires data for entry predetermined for each user from the server system, the data for entry having figures and marker information, each of the figures pre-allocated to relevant entry target characters, respectively, the entry target characters being entered by a user, the marker information being used when the figure is displayed on a display;   an receiver that receives an input operation of the user in accordance with an image displayed based on the acquired data for entry;   a specifying processer that specifies the figure designated by the user in response to the input operation; and   a transmitter that transmits marker information corresponding to the specified figure to the server system.   
     
     
         9 . A communication method for a terminal and a server system that executes various processes, via a network and that deliver various services to a user while they transmit/receive data to/from the server system, the communication method comprising:
 acquiring data for entry predetermined for each user from the server system, the data for entry having figures and marker information, each of the figures pre-allocated to relevant entry target characters, respectively, the entry target characters being entered by a user, the marker information being used when the figure is displayed on a display;   receiving an input operation of the user in accordance with an image displayed based on the acquired data for entry;   specifying the figure designated by the user in response to the input operation; and   transmitting marker information corresponding to the specified figure to the server system.   
     
     
         10 . A recording medium having figures that are visible and that are for specifying, at a server system that delivers various services, entry target characters entered by a user when the user accesses the server system by making use of a communication terminal device, the recording medium comprising:
 a table that has a plurality of rows and a plurality of columns, a plurality of different entry target characters and a plurality of figures that differ for each entry target character being arranged in a row or column, and   each figure having a shape that is unconverted by a character code used at the time of user operational input based on an input device to be used by the user for entering predetermined information.