INFORMATION DISPLAY DEVICE

An information display device includes a display unit configured to display information about an object such that the information about the object at least partially overlaps with forward view of a user, and a controller configured to control display of the display unit. The controller is configured to estimate or acquire a prospective moving direction of the object, acquire a sight-line frequency representing a frequency with which a sight-line of the user is directed to the object within a prescribed period, determine whether the sight-line frequency is equal to or more than a prescribed frequency threshold, and cause the display unit to display the prospective moving direction of the object at least on condition that the controller determines that the sight-line frequency is less than the frequency threshold.