1. An apparatus for providing a tactile sensation in cooperation with a display device for displaying a virtual image, the apparatus comprising: a communication unit configured to receive information on a virtual image; a determiner unit configured to determine whether or not a user attempts an interaction with the virtual image by using an image of a user body; and a tactile-sensation provider unit configured to provide a tactile sensation to a preset body part of the user based on a determination result of the determiner unit.