Patent ID: 8451216

Claim:
A user interface device which allows a user to operate an object displayed in a work space assigned to the user, said user interface device comprising: a detection unit configured to detect a position of the user; a display unit configured to display the work space; and a control unit configured to control display of an independent object which belongs to no user, wherein said control unit is configured to: move the independent object in a mode which varies between when the independent object is in a face-to-face space of said display unit which is face to face with the position of the user detected by said detection unit and when the independent object is outside the face-to-face space; and stop the moving independent object in the work space assigned to the user when the user obtains the independent object, and wherein said control unit is further configured to cause a moving speed of the independent object moving in the face-to-face space to be slower than a moving speed of the independent object moving outside the face-to-face space.