base-system@gentoo.org Gentoo Base System limit RAM and CPU ressources by disabling features Use dev-libs/libusb detection to hotplug new smartcard readers. This flag should only be enabled if you're running a non-Linux kernel or you don't want to use udev. Use virtual/libudev rules to handle devices' permissions and hotplug support. Unless you know what you're doing do not disable this flag on Linux kernels. This is provided as an option for completeness. Uses sys-auth/polkit to restrict access to smartcard readers or smartcards to given users. https://salsa.debian.org/rousseau/PCSC/blob/master/ChangeLog LudovicRousseau/PCSC