diff --git a/init.lua b/init.lua
index f40ae72..44998ae 100644
--- a/init.lua
+++ b/init.lua
@@ -8,6 +8,7 @@ local MP = minetest.get_modpath("digibuilder")
 
 -- common functions
 dofile(MP.."/common.lua")
+dofile(MP.."/marker.lua")
 dofile(MP.."/formspec.lua")
 dofile(MP.."/digiline_rules.lua")
 dofile(MP.."/digiline_validate_pos.lua")
diff --git a/marker.lua b/marker.lua
new file mode 100644
index 0000000..c2188d0
--- /dev/null
+++ b/marker.lua
@@ -0,0 +1,45 @@
+
+function digibuilder.show_marker(pos, radius)
+	local entity = "digibuilder:marker"
+
+	minetest.add_entity({x=pos.x+radius, y=pos.y+radius, z=pos.z+radius}, entity)
+	minetest.add_entity({x=pos.x-radius, y=pos.y+radius, z=pos.z+radius}, entity)
+	minetest.add_entity({x=pos.x+radius, y=pos.y+radius, z=pos.z-radius}, entity)
+	minetest.add_entity({x=pos.x-radius, y=pos.y+radius, z=pos.z-radius}, entity)
+	minetest.add_entity({x=pos.x+radius, y=pos.y-radius, z=pos.z+radius}, entity)
+	minetest.add_entity({x=pos.x-radius, y=pos.y-radius, z=pos.z+radius}, entity)
+	minetest.add_entity({x=pos.x+radius, y=pos.y-radius, z=pos.z-radius}, entity)
+	minetest.add_entity({x=pos.x-radius, y=pos.y-radius, z=pos.z-radius}, entity)
+end
+
+local texture = "digibuilder_marker_green.png"
+
+minetest.register_entity("digibuilder:marker", {
+	initial_properties = {
+		visual = "cube",
+		visual_size = {x=1.05, y=1.05},
+		static_save = false,
+		textures = {
+			texture,
+			texture,
+			texture,
+			texture,
+			texture,
+			texture
+		},
+		collisionbox = {-0.525, -0.525, -0.525, 0.525, 0.525, 0.525},
+		physical = false,
+	},
+
+	on_activate = function(self)
+		minetest.after(8.0, function() self.object:remove() end)
+	end,
+
+	on_rightclick=function(self)
+		self.object:remove()
+	end,
+
+	on_punch = function(self)
+		self.object:remove()
+	end,
+})
diff --git a/node.lua b/node.lua
index 375e27e..265cfd9 100644
--- a/node.lua
+++ b/node.lua
@@ -126,7 +126,7 @@ minetest.register_node("digibuilder:digibuilder", {
 		return stack:get_count()
 	end,
 
-	on_punch = function()--pos, node, puncher)
-    --TODO show marker on punch
+	on_punch = function(pos)
+		digibuilder.show_marker(pos, digibuilder.max_radius)
 	end
 })
diff --git a/readme.md b/readme.md
index 5a066d9..5c2f24d 100644
--- a/readme.md
+++ b/readme.md
@@ -9,7 +9,6 @@ State: **WIP**
 # TODO
 
 * [ ] `after_place_node(pos, placer, itemstack, pointed_thing)` compat (digtron mod?)
-* [ ] area display on punch (like in the jumpdrive/protector mod)
 
 further issues:
 * [ ] Storage of read schematics/buildings
diff --git a/textures/digibuilder_marker_green.png b/textures/digibuilder_marker_green.png
new file mode 100644
index 0000000..1c38b8d
Binary files /dev/null and b/textures/digibuilder_marker_green.png differ