By using data glasses with a small movable display on the side of the glasses, content can be displayed to the user. This means that there is only a very small overlap of the real environment with digital content. The glasses are controlled by voice commands. In addition, a camera is often available that can transmit the surrounding image. This can be very helpful in giving instructions to the user. Instructions to the wearer of the glasses can also be given via the integrated loudspeaker in the glasses. Only by actively focusing on the display is the content shown fully perceived.