A method for dividing a blister strip having a plurality of blister-packaged drugs apportioned into separate sections of the blister strip is provided. A blister strip with a substrate having a plurality of depressions for drug portions is provided and an image of the substrate is generated by a 3D-sensor device. A control device evaluates the image with image analysis. Based on the analysis results, an arrangement of the depressions is determined and control signals for a separating device are generated. The blister strip is then divided into a plurality of blister strip parts based on the control signals. A blister strip dividing device is also provided.