| 摘要 |
This invention discloses a server and the like for controlling display such that, when implementing display restrictions for confidential information on a terminal in a public space, said confidential information is not leaked to guests, and to the extent possible, the terminal's user is not impeded from working on the terminal. A user-information reception unit (13) in this server (1) receives, from a terminal (10), user information that indicates whether or not a user is currently using said terminal and whether or not confidential information that is set to be treated confidentially is being displayed. A guest-information reception unit (11) receives, from a sensor (3), guest information that indicates the position of a guest. On the basis of said guest information, a perception-region computation unit (14) computes a perception region for the guest. On the basis of perception-region information indicating said perception region, the user information, and terminal information indicating the position of the terminal, a risk-level determination unit (15) determines a risk level for the terminal (10). A control-information transmission unit (16) transmits, to the terminal (10), control information indicating a control technique, corresponding to the aforementioned risk level, for controlling the display of the abovementioned confidential information. |
