Spectacle-type apparatus for the reliable operation of a machine tool, a production machine and/or a robot, comprising: - a first computing unit and a second computing unit independent from the first computing unit, - a first display unit and a second display unit independent from the first display unit, - a first registration unit and a second registration unit independent from the first registration unit, wherein the first registration unit is provided to register a first surrounding region (α1) of an operator, to convert the first surrounding region (α1) into a first item of image information, which can be processed by the first computing unit, and to pass the first item of image information to the first computing unit, wherein the second registration unit is provided to register a second surrounding region (α2) of the operator, to convert the second surrounding region (α2) into a second item of image information, which can be processed by the second computing unit, and to pass the second item of image information to the second computing unit, wherein the first surrounding region (α1) and the second surrounding region (α2) overlap, wherein the first computing unit is provided to generate a first partial image (α3), wherein the first computing unit is provided to pass the first partial image (α3) to the first display unit, wherein the first display unit is provided to display the first partial image (α3), wherein the second computing unit is provided to generate a second partial image (α4), wherein the second computing unit is provided to pass the second partial image (α4) to the second display unit, wherein the second display unit is provided to display the second partial image (α4), wherein the spectacle-type apparatus is provided to generate and display a full image using two channels by overlaying the first partial image (α3) and the second partial image (α4), wherein the spectacle-type apparatus has a higher-level computing unit associated with the first and the second computing unit for comparing the first item of image information and the second item of image information, wherein the spectacle-type apparatus is embodied as an interface between an operator and the machine tool, the production machine and/or the robot to enable an action to be carried out by the operator and is configured so that, if the first item of image information and the second item of image information coincide, a reliable action is initiated by the operator as a reliable operation of the machine tool, the production machine and/or the robot, and if the first item of image information and the second item of image information do not coincide, the action is not carried out or is stopped. - a first computing unit and a second computing unit independent from the first computing unit, - a first display unit and a second display unit independent from the first display unit, - a first registration unit and a second registration unit independent from the first registration unit, wherein the first registration unit is provided to register a first surrounding region (α1) of an operator, to convert the first surrounding region (α1) into a first item of image information, which can be processed by the first computing unit, and to pass the first item of image information to the first computing unit, wherein the second registration unit is provided to register a second surrounding region (α2) of the operator, to convert the second surrounding region (α2) into a second item of image information, which can be processed by the second computing unit, and to pass the second item of image information to the second computing unit, wherein the first surrounding region (α1) and the second surrounding region (α2) overlap, wherein the first computing unit is provided to generate a first partial image (α3), wherein the first computing unit is provided to pass the first partial image (α3) to the first display unit, wherein the first display unit is provided to display the first partial image (α3), wherein the second computing unit is provided to generate a second partial image (α4), wherein the second computing unit is provided to pass the second partial image (α4) to the second display unit, wherein the second display unit is provided to display the second partial image (α4), wherein the spectacle-type apparatus is provided to generate and display a full image using two channels by overlaying the first partial image (α3) and the second partial image (α4), wherein the spectacle-type apparatus has a higher-level computing unit associated with the first and the second computing unit for comparing the first item of image information and the second item of image information, wherein the spectacle-type apparatus is embodied as an interface between an operator and the machine tool, the production machine and/or the robot to enable an action to be carried out by the operator and is configured so that, if the first item of image information and the second item of image information coincide, a reliable action is initiated by the operator as a reliable operation of the machine tool, the production machine and/or the robot, and if the first item of image information and the second item of image information do not coincide, the action is not carried out or is stopped.