Patent attributes
A password authentication device includes a display control unit that displays plurality of input key groups, an input operation unit operated by a user to select a soft key on the display screen to enable the input of a password, a sight line detection sensor that detects the direction of the line of sight of a user who operates the input operation unit, an operation target specifying part that specifies an input key group located at the end of the line of sight of the user among the plurality of input key groups, based on the direction of the line of sight detected by the sight line detection sensor, and a password acquisition part assumes an operation in the input operation unit as an operation for the input key group specified by the operation target specifying part and acquires a password inputted through the input operation unit.
