公开(公告)号：US09886564B2

公开(公告)日：2018-02-06

申请号：US15339296

申请日：2016-10-31

申请人： BankGuard, Inc.

发明人： Haruhiko Fujii ,  Shuichi Matsuda

IPC分类号： G06F17/30 ,  H04N7/16 ,  G06F21/10 ,  G06F21/36 ,  G06Q20/40 ,  G06F21/62 ,  G06Q20/32

CPC分类号： G06F21/10 ,  G06F17/30268 ,  G06F17/30339 ,  G06F21/36 ,  G06F21/6218 ,  G06F21/6245 ,  G06F2221/0775 ,  G06Q20/3223 ,  G06Q20/409 ,  H04L63/08 ,  H04L63/102

摘要： 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).