diff --git a/home-manager/modules/programs.nix b/home-manager/modules/programs.nix
index 445d48d..4da4304 100644
--- a/home-manager/modules/programs.nix
+++ b/home-manager/modules/programs.nix
@@ -21,6 +21,8 @@
     tesseract
     syncthing
     todo
+    pass
+    # yubikey-manager-qt
   ];
 
   services.syncthing = { enable = true; };
diff --git a/home-manager/modules/zsh/zsh.nix b/home-manager/modules/zsh/zsh.nix
index 773bd19..ee3909a 100644
--- a/home-manager/modules/zsh/zsh.nix
+++ b/home-manager/modules/zsh/zsh.nix
@@ -85,6 +85,7 @@
       tree = "eza --tree";
       kk = "sudo kill -9";
       grepps = "ps -A | grep";
+      try = ''f() { nix-shell -p "$@" --run zsh; unset -f f; }; f'';
 
       gitpa = ''f() { git add -A && git commit -m "$1" && git push; }; f'';
 
diff --git a/nixos/custom.nix b/nixos/custom.nix
index 6fd6389..282544d 100644
--- a/nixos/custom.nix
+++ b/nixos/custom.nix
@@ -3,6 +3,9 @@
 {
   services.udev.packages = [ pkgs.yubikey-personalization ];
 
+  services.pcscd.enable = true;
+  # services.yubikey-agent.enable = true;
+
   programs.gnupg.agent = {
     enable = true;
     # enableSSHSupport = true;
@@ -50,6 +53,9 @@
     # lenovo-legion 
     fprintd
     # fprintd-clients
+    yubioath-flutter
+    yubikey-manager
+    pam_u2f
   ];
 
   # starting the following units: accounts-daemon.service, systemd-modules-load.service, systemd-tmpfiles-resetup.service, tlp.ser