From c567dbffaa222891535e187cec44bbbd4a51b15e Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@hey.com>
Date: Wed, 9 Jul 2025 20:46:43 -0400
Subject: [PATCH] Only allow fingerprint setup if a sensor is detected

---
 bin/omarchy-fingerprint-setup | 48 +++++++++++++++++++----------------
 1 file changed, 26 insertions(+), 22 deletions(-)

diff --git a/bin/omarchy-fingerprint-setup b/bin/omarchy-fingerprint-setup
index 48e5bca..98b8af3 100755
--- a/bin/omarchy-fingerprint-setup
+++ b/bin/omarchy-fingerprint-setup
@@ -1,15 +1,18 @@
 #!/bin/bash
 
-yay -S --noconfirm --needed fprintd libfprint
+yay -S --noconfirm --needed fprintd libfprint lsusb
 
-# Add fingerprint authentication as an option for sudo
-if ! grep -q pam_fprintd.so /etc/pam.d/sudo; then
-  sudo sed -i '1i auth    sufficient pam_fprintd.so' /etc/pam.d/sudo
-fi
+if ! lsusb | grep -iq fingerprint; then
+  echo "No fingerprint sensor detected."
+else
+  # Add fingerprint authentication as an option for sudo
+  if ! grep -q pam_fprintd.so /etc/pam.d/sudo; then
+    sudo sed -i '1i auth    sufficient pam_fprintd.so' /etc/pam.d/sudo
+  fi
 
-# Add fingerprint authentication as an option for hyprpolkitagent
-if [ ! -f /etc/pam.d/polkit-1 ] || ! grep -q pam_fprintd.so /etc/pam.d/polkit-1; then
-  sudo tee /etc/pam.d/polkit-1 >/dev/null <<'EOF'
+  # Add fingerprint authentication as an option for hyprpolkitagent
+  if [ ! -f /etc/pam.d/polkit-1 ] || ! grep -q pam_fprintd.so /etc/pam.d/polkit-1; then
+    sudo tee /etc/pam.d/polkit-1 >/dev/null <<'EOF'
 auth      required pam_unix.so
 auth      optional pam_fprintd.so
 
@@ -17,18 +20,19 @@ account   required pam_unix.so
 password  required pam_unix.so
 session   required pam_unix.so
 EOF
-fi
-
-systemctl --user restart hyprpolkitagent
-
-# Enroll the first finger
-echo -e "\e[32m\nLet's setup your right index finger as the first fingerprint.\nKeep moving the finger around on sensor until the process completes.\n\e[0m"
-sudo fprintd-enroll $USER
-
-echo -e "\e[32m\nNow let's verify that it's working correctly.\e[0m\n"
-
-if fprintd-verify; then
-  echo -e "\e[32m\nPerfect! Now you can use your fingerprint on the lock screen (Super + Escape).\e[0m"
-else
-  echo -e "\e[31m\nSomething went wrong. Maybe try again?\e[0m"
+  fi
+
+  systemctl --user restart hyprpolkitagent
+
+  # Enroll the first finger
+  echo -e "\e[32m\nLet's setup your right index finger as the first fingerprint.\nKeep moving the finger around on sensor until the process completes.\n\e[0m"
+  sudo fprintd-enroll $USER
+
+  echo -e "\e[32m\nNow let's verify that it's working correctly.\e[0m\n"
+
+  if fprintd-verify; then
+    echo -e "\e[32m\nPerfect! Now you can use your fingerprint on the lock screen (Super + Escape).\e[0m"
+  else
+    echo -e "\e[31m\nSomething went wrong. Maybe try again?\e[0m"
+  fi
 fi