diff --git a/bin/init.lua b/bin/init.lua
index 0c1f7bb..9e4c945 100755
--- a/bin/init.lua
+++ b/bin/init.lua
@@ -10,6 +10,16 @@ return {
 			elseif (string.lower(confirm_prompt) == "r") or (string.lower(confirm_prompt) == "reset") then
 				awful.spawn("shutdown -r now", false)
 			end
+		end,
+
+		lock = function()
+			local n = naughty.notify({
+				title = "Locking screen",
+				text = "...",
+				timeout = 1
+			})
+
+			awful.spawn(script_dir .. "lock " .. beautiful.icons.lockicon, false)
 		end
 	},
 
diff --git a/bin/scripts/lock b/bin/scripts/lock
new file mode 100755
index 0000000..0701bb5
--- /dev/null
+++ b/bin/scripts/lock
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+icon=$1
+tmpbg="/tmp/lockscreen.png"
+tmpic="/tmp/lockscreenicon.png"
+#(( $# )) && { icon=$1; }
+
+scrot --overwrite "$tmpbg"
+convert "$icon" -scale 25% "$tmpic"
+convert "$tmpbg" -scale 10% -scale 1000% "$tmpbg"
+convert "$tmpbg" "$tmpic" -gravity center -composite -matte "$tmpbg"
+
+i3lock -u -i "$tmpbg"
diff --git a/binds/system/system.lua b/binds/system/system.lua
index 8ad95f1..f5da186 100644
--- a/binds/system/system.lua
+++ b/binds/system/system.lua
@@ -11,5 +11,28 @@ return gears.table.join(
 			description = "Shutdown",
 			group = "System"
 		}
+	),
+
+	awful.key( {"Mod4"}, "a",
+		function ()
+			bin.system.lock()
+		end,
+
+		{
+			description = "Lock screen",
+			group = "System"
+		}
+	),
+
+	awful.key( {"Mod4", "Control"}, "x",
+		function ()
+			-- requires sudoers rule
+			awful.spawn("sudo systemctl restart lightdm")
+		end,
+
+		{
+			description = "Restart lightdm",
+			group = "System"
+		}
 	)
 )
diff --git a/theme/resources/icons.lua b/theme/resources/icons.lua
index 8d63497..75dc516 100755
--- a/theme/resources/icons.lua
+++ b/theme/resources/icons.lua
@@ -9,6 +9,9 @@ return {
 	submenu = conf.icon_dir .. "submenu.svg",
 	launcher = conf.icon_dir .. "arch.svg",
 
+	-- must be a png for i3lock
+	lockicon = conf.icon_dir .. "arch.png",
+
 	music = {
 		grey = {
 			play = conf.icon_dir .. "music/play-grey.svg",
diff --git a/theme/resources/icons/arch.png b/theme/resources/icons/arch.png
new file mode 100644
index 0000000..6328fd3
Binary files /dev/null and b/theme/resources/icons/arch.png differ