Support for a fork of i3lock called i38lock added. In stormus, install i38lock. To build from source, https://git.stormux.org/storm/i38lock This is more secure than the pin implementation but it remains available.

scripts/screenlock_autolock.sh

@@ -16,6 +16,11 @@ scriptDir="${scriptPath%/*}"
 runtimeDir="${XDG_RUNTIME_DIR:-/tmp}"
 lockDir="${runtimeDir}/i38-screenlock-autolock"
 pollSeconds=5
+lockCommand=("${@:2}")
+
+if [[ ${#lockCommand[@]} -eq 0 ]]; then
+    lockCommand=("${scriptDir}/screenlock.sh")
+fi
 
 notify_autolock_disabled() {
     local message="$1"
@@ -56,7 +61,14 @@ focused_window_is_fullscreen() {
 }
 
 screenlock_is_running() {
-    pgrep -f "${scriptDir}/screenlock.sh" &> /dev/null
+    case "${lockCommand[0]##*/}" in
+        i38lock)
+            pgrep -x i38lock &> /dev/null
+            ;;
+        *)
+            pgrep -f "${lockCommand[0]}" &> /dev/null
+            ;;
+    esac
 }
 
 cleanup() {
@@ -103,7 +115,7 @@ while : ; do
     idleMilliseconds="$(xprintidle 2> /dev/null || echo 0)"
     if [[ "$idleMilliseconds" =~ ^[0-9]+$ ]] && [[ "$idleMilliseconds" -ge $((autolockSeconds * 1000)) ]]; then
         if ! screenlock_is_running && ! video_is_playing && ! focused_window_is_fullscreen; then
-            "${scriptDir}/screenlock.sh"
+            "${lockCommand[@]}"
             sleep "$pollSeconds"
         fi
     fi