Abstract: A method for producing a connection between component parts and a component made of component parts are disclosed. In an embodiment, a includes providing a first component part having a first exposed insulation layer and a second component part having a second exposed insulation layer, wherein each of the insulation layers has at least one opening, joining together the first and second component parts such that the opening of the first insulation layer and the opening of the second insulation layer overlap in top view, wherein an Au layer and a Sn layer are arranged one above the other in at least one of the openings and melting the Au layer and the Sn layer to form an AuSn alloy, wherein the AuSn alloy forms a through-via after cooling electrically conductively connecting the first component part to the second component part.

Abstract: Implementations relate to a method for establishing an end-to-end encrypted data communication link between a portable medical apparatus and a data-management device. The method comprises at least the following steps: out-of-band transmission of a public key from the medical apparatus to the data-management device, wherein the transmission does not take place via Bluetooth; setting up an encrypted Bluetooth data communication link between the medical apparatus and the data-management device; transmitting a public key from the data-management device to the medical apparatus via the Bluetooth link that has been set up; calculating a combined key on the data-management device and on the medical apparatus; setting up an end-to-end encrypted link between the medical apparatus and the data-management device using the combined key, such as a symmetrical, key.

Abstract: A system including a processing device and an exchangeable camera connected thereto for detecting a machine-readable security feature of a valuable document. The system is calibrated by means of processing device correction data, which relate to characteristics of the processing device, and camera calibration data, which relate to the characteristics of the processing device and of the camera connected thereto. The camera includes a memory configured to store the processing device correction data and the camera calibration data relating to the System in which the calibration is carried out, and the processing device includes a memory configured to store the processing device correction data and the camera calibration data relating to the system in which operation for detecting a machine-readable security feature of the valuable document is carried out.

Abstract: A system including a processing device and an exchangeable camera connected thereto for detecting a machine-readable security feature of a valuable document. The system is calibrated by means of processing device correction data, which relate to characteristics of the processing device, and camera calibration data, which relate to the characteristics of the processing device and of the camera connected thereto. The camera includes a memory configured to store the processing device correction data and the camera calibration data relating to the System in which the calibration is carried out, and the processing device includes a memory configured to store the processing device correction data and the camera calibration data relating to the system in which operation for detecting a machine-readable security feature of the valuable document is carried out.