A method for the production control of process operations, supported by inner space location determination, in the industrial processing of workpieces in steel and/or sheet metal processing in a production hall for production of an end product, with the steps providing (step 51) an inner space location determination system with a plurality of transmitter-receiver units installed in a fixed manner in the production hall, at least one mobile unit and an analysis unit, wherein the transmitter-receiver units and the mobile unit are designed for transmitting and receiving UWB radio signals and the analysis unit is designed for determining the positions of the mobile unit in the production hall from the transit times of the UWB radio signals between the transmitter-receiver units and the mobile unit, wherein the mobile unit further has at least one of the following sensors: an acceleration sensor, a position sensor, a MEMS-based sensor, a barometer sensor, assigning (step 51A, 51B) the mobile unit to at least one workpiece, wherein the mobile unit is executed as an electronic component and has its own timing unit for determining transit times, wherein the assignment is effected by activating the mobile unit by means of a predetermined movement for activation, determining (step 53) the position of the at least one assigned workpiece in the production hall by localizing the assigned mobile unit with the inner space location determination system and integrating (step 55) the determined position into the production control of the industrial production plant for producing the end product, further with integrating a signal from the sensor into the control system for production of the end product, wherein a movement or orientation signal is used for assigning the mobile unit to the at least one workpiece, wherein the movement or orientation signal is generated by shaking the mobile unit and/or specific positions of the mobile unit and/or by performing specified gestures with the mobile unit. providing (step 51) an inner space location determination system with a plurality of transmitter-receiver units installed in a fixed manner in the production hall, at least one mobile unit and an analysis unit, wherein the transmitter-receiver units and the mobile unit are designed for transmitting and receiving UWB radio signals and the analysis unit is designed for determining the positions of the mobile unit in the production hall from the transit times of the UWB radio signals between the transmitter-receiver units and the mobile unit, wherein the mobile unit further has at least one of the following sensors: an acceleration sensor, a position sensor, a MEMS-based sensor, a barometer sensor, assigning (step 51A, 51B) the mobile unit to at least one workpiece, wherein the mobile unit is executed as an electronic component and has its own timing unit for determining transit times, wherein the assignment is effected by activating the mobile unit by means of a predetermined movement for activation, determining (step 53) the position of the at least one assigned workpiece in the production hall by localizing the assigned mobile unit with the inner space location determination system and integrating (step 55) the determined position into the production control of the industrial production plant for producing the end product, further with integrating a signal from the sensor into the control system for production of the end product, wherein a movement or orientation signal is used for assigning the mobile unit to the at least one workpiece,