The "pcscd.service" file of sys-apps/pcsc-lite-1.8.13-r1 has no entries for "User" and "Group". The service is started under the root user. The opnenrc init files start the daemon under "pcscd/pcscd". This should also be the case for systemd.
Created attachment 400490 [details, diff]
Here is patch.
Also available in vortex overlay: https://github.com/nE0sIghT/vortex-overlay/commit/85e126aa046499be686699b619fb9938774af7c7