A method at least including the steps of aligning an image capturing element of a mobile display apparatus on a multi-link actuated mechanism by a user, capturing at least the multi-link actuated mechanism by means of the image capturing element of the mobile display apparatus, identifying the multi-link actuated mechanism in the captured image data of the image capturing element of the mobile display apparatus, indicating in three dimensions the multi-link actuated mechanism on the basis of the captured image data together with the depth information items, and overlaying the virtual representation of the multi-link actuated mechanism on the multi-link actuated mechanism in the display element of the mobile display apparatus, wherein the overlay is implemented taking account of the geometric relationships of the multi-link actuated mechanism.

A robot includes a display, a camera, a communication interface, a moving mechanism, and a control unit. The control unit includes a movement control unit, a remote video image processing unit, and a local video image processing unit. The movement control unit controls the moving mechanism to move the robot. The remote video image processing unit acquires a remote video image including video images representing a plurality of remote users located at sites different from the current location of the robot from an external network via a communication interface, and displays the acquired remote video image on the display. The local video image processing unit transmits a local video image, which is a video image captured by the camera, to the external network via the communication interface to cause the plurality of remote users to view the local video image.