diff --git a/.config/i3/config b/.config/i3/config
index 506009f..fd94d6f 100644
--- a/.config/i3/config
+++ b/.config/i3/config
@@ -152,6 +152,9 @@ bindsym $mod+r mode "resize"
 # Screenshot
 bindsym Print exec scrot -e 'mv $f ~/pictures/ 2>/dev/null'
 
+# Screen lock
+bindsym control+l exec 'lock'
+
 # Start i3bar to display a workspace bar (plus the system information i3status
 # finds out, if available)
 bar {
diff --git a/bin/lock b/bin/lock
new file mode 100755
index 0000000..2bca112
--- /dev/null
+++ b/bin/lock
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -euo pipefail
+IFS=$'\n\t'
+
+LOCK_BG_FILE="/tmp/lock_screen.png"
+
+scrot "$LOCK_BG_FILE"
+mogrify -filter Gaussian -resize 50% -define filter:sigma=2.5 -resize 200% "$LOCK_BG_FILE"
+mogrify -font Liberation-Sans -fill white -undercolor '#00000080' -pointsize 30 -gravity South -annotate +0+200 "Screen locked" "$LOCK_BG_FILE"
+i3lock -e -i "$LOCK_BG_FILE"