Patent ID: 8611858

Claim:
A mobile terminal that allows a server to manage confidential information, the confidential information being updated by the mobile terminal, the mobile terminal comprising: a calculation control unit that manages transfer of data or communication performed within the mobile terminal, and transmits/receives communication information to/from the server only when a connecting relation between the mobile terminal and the server is in an optimum state for at least one of: downloading the communication information from the server to the mobile terminal, and uploading the communication information to the server from the mobile terminal; a terminal data storing device that stores data including the confidential information transferred from the server; a data processor that updates the data to be stored in the terminal data storing device by creating or editing the data; a security operation start device that detects whether a no-operation time has reached a prescribed time; and a security operation executing device that determines, when the security operation start device detects that the no-operation time has reached the prescribed time, whether the data is confidential, transfers the data to the server as the confidential information when the data is determined to be confidential, and then erases the data.