Abstract: The invention relates to a single-photon transmission device for enabling secure authentication, said device comprising a plurality of single-photon sources, a control device which is configured to actuate each of the single-photon sources separately, and an optical subdevice which is configured to combine single-photon streams of photons emitted by the at least one single-photon source into a QKD coupling beam consisting of a common stream of single photons. The invention also relates to a single-photon receiving device for receiving a QKD coupling beam transmitted from a single-photon transmission device. The invention also relates to a method for generating a common quantum key for a single-photon transmission device and a single-photon receiving device. The invention also relates to an integrated QKD circuit. The invention also relates to a car key comprising a single-photon transmission device and/or a single-photon receiving device.

Abstract: An antenna assembly configured to be mounted on a glass panel of a vehicle and optimized for performance in a range 2.45 to 5 GHz includes a generally rectangular substrate, an antenna element disposed on a surface of the substrate, and at least one ground element disposed on the surface of the substrate. The antenna assembly may include a coaxial connector mounted directly to the substrate and may include a flexible substrate portion located between the coaxial connector and the antenna and ground elements.

Abstract: A steering device which includes coded microstructures which are provided on the steering shaft and/or on a device that is connected to the steering shaft in a non-positive manner; a sensor which detects the microstructures and outputs associated measuring signals; and an electronic circuit to which the measuring signals of the sensor are fed, and which outputs electronic signals to control the steering is disclosed.

Abstract: A steering device which includes coded microstructures which are provided on the steering shaft and/or on a device that is connected to the steering shaft in a non-positive manner; a sensor which detects the microstructures and outputs associated measuring signals; and an electronic circuit to which the measuring signals of the sensor are fed, and which outputs electronic signals to control the steering is disclosed.