diff --git a/modules/nitrokey-gpg-smartcard.nix b/modules/nitrokey-gpg-smartcard.nix
index 6d6f9dd..858af20 100644
--- a/modules/nitrokey-gpg-smartcard.nix
+++ b/modules/nitrokey-gpg-smartcard.nix
@@ -18,7 +18,10 @@
   # Restart gpg-agent after config change.
   # Otherwise there might be a gpg error about "no pinentry".
   # https://discourse.nixos.org/t/cant-get-gnupg-to-work-no-pinentry/15373/19
-  # But how to restart it? Maybe this?
+  #
+  # But how to restart it?
+  # https://superuser.com/a/1150399
+  # gpgconf --kill gpg-agent
   # killall gpg-agent
   # systemctl --user restart gpg-agent
 
@@ -27,6 +30,8 @@
 
   # TODO: gpg-agent pinentry problem
   # https://github.com/NixOS/nixpkgs/issues/97861
+  # TODO: Maybe GNOME is overriding the SSH agent socket that is set elswhere by NixOS?
+  # https://wiki.archlinux.org/title/GnuPG#GNOME_on_Wayland_overrides_SSH_agent_socket
   #
   # gpgconf --check-programs
   #=> gpgconf: error running '/nix/store/lvsbmqy4dmlri22145hbr6799hgbnpnf-gnupg-2.4.0/bin/pinentry': probably not installed