On 2022-11-20, Claudia Neumann <dr.claudia.neumann@gmx.de> wrote: > > I read the answer in stackoverflow, but I don't know how I should implement it with /dev/ > ttyACM0. > There appears to be a Debian package that contains a utility to read the German Gesundheitkarte (/usr/bin/egk-tool); maybe du solltest take a gander at the code (oder something). https://packages.debian.org/bullseye/opensc Perhaps you're already aware of all this.