Abstract: A user interface, comprising: video glasses (10), for being used as a display of a desktop computer; built-in earphones (60), connected to a frame of the video glasses, for being used as an output facility of the computer; microphone (24) embedded in a frame of the video glasses (10), for being used as an input facility to the computer; a keyboard substitute for the computer or cellular telephone, the keyboard substitute comprising: (a) a virtual keyboard (20), projected on a display of the video glasses (10); (b) at least one glove (12) and sensors (14) for indicating the state and position of each of the fingers of the at least one glove (12), with reference to the image of a keyboard; thereby providing a user interface in a form of video glasses for the computer.