Abstract: An apparatus and a method are arranged for generating a digital image. The apparatus comprises an image generation unit for generating the digital image having a first security module adapted for cryptographically linking a first secret unambiguously identifying the first security module, and securely deposited therein, with the digital image such that the integrity of the digital image can be ascertained using the result of this cryptographic linkage. Further, the apparatus comprises a portable data carrier which can be introduced into the apparatus. The portable data carrier is furnished with a second security module which is adapted for cryptographically linking a second secret unambiguously identifying the portable data carrier, and securely deposited therein, with the digital image such that the identity of the portable data carrier can be ascertained using the result of this cryptographic linkage.

Abstract: An apparatus and a method are arranged for generating a digital image. The apparatus comprises an image generation unit for generating the digital image having a first security module adapted for cryptographically linking a first secret unambiguously identifying the first security module, and securely deposited therein, with the digital image such that the integrity of the digital image can be ascertained using the result of this cryptographic linkage. Further, the apparatus comprises a portable data carrier which can be introduced into the apparatus. The portable data carrier is furnished with a second security module which is adapted for cryptographically linking a second secret unambiguously identifying the portable data carrier, and securely deposited therein, with the digital image such that the identity of the portable data carrier can be ascertained using the result of this cryptographic linkage.

Abstract: An optical detector for use in liquid chromatography systems or capillary electrophoresis systems comprises an optically transparent detector body through which an analyte channel extends, a fluid containing the analyte being adapted to be guided through said analyte channel. In order to increase the detection sensitivity, the light path between a light source introducing light and an optoelectric sensor element of the liquid chromatography system or capillary electrophoresis system is constructed as a Bragg waveguide structure extending at least along a sublength of said analyte channel essentially in the channel direction.