diff --git a/src/props/interactive.gd b/src/props/interactive.gd
index 51be3dc..e2c452f 100644
--- a/src/props/interactive.gd
+++ b/src/props/interactive.gd
@@ -21,6 +21,7 @@ func _ready() -> void:
 	controller.connect(SELECT_SIGNAL, select)
 	controller.add_user_signal(DESELECT_SIGNAL)
 	controller.connect(DESELECT_SIGNAL, deselect)
+	controller.tree_exited.connect(deselect)
 	controller.add_user_signal(ACTIVATE_SIGNAL)
 	controller.connect(ACTIVATE_SIGNAL, activate)
 
diff --git a/src/props/retinal_scanner/retinal_scanner.gd b/src/props/retinal_scanner/retinal_scanner.gd
index 42c2b47..5e0f3ec 100644
--- a/src/props/retinal_scanner/retinal_scanner.gd
+++ b/src/props/retinal_scanner/retinal_scanner.gd
@@ -8,6 +8,7 @@ signal activated
 
 
 func _ready() -> void:
+	interactive.controller.connect(Interactive.SELECT_SIGNAL, _on_interactive_selected)
 	_deferred_init.call_deferred()
 
 
@@ -52,3 +53,8 @@ func serialize() -> Dictionary:
 
 func deserialize(state: Dictionary) -> void:
 	enabled = state["enabled"]
+
+
+func _process(_delta: float) -> void:
+	# TODO don't do this in _process
+	interactive.enabled = enabled and _has_item()
diff --git a/src/props/retinal_scanner/retinal_scanner.tscn b/src/props/retinal_scanner/retinal_scanner.tscn
index be8d9b2..f57dbc3 100644
--- a/src/props/retinal_scanner/retinal_scanner.tscn
+++ b/src/props/retinal_scanner/retinal_scanner.tscn
@@ -24,6 +24,7 @@ font_size = 96
 outline_size = 24
 
 [node name="InteractiveBody" type="StaticBody3D" parent="."]
+unique_name_in_owner = true
 collision_layer = 3
 collision_mask = 0
 
diff --git a/src/world/world.tscn b/src/world/world.tscn
index a67352d..faf7b8c 100644
--- a/src/world/world.tscn
+++ b/src/world/world.tscn
@@ -4,7 +4,7 @@
 [ext_resource type="Resource" uid="uid://tgac5tnfx56r" path="res://src/world/world_manager.tres" id="2_5kmgb"]
 [ext_resource type="PackedScene" uid="uid://byvjsvavbg5xe" path="res://src/ui/menus/pause_menu/pause_menu.tscn" id="2_6fy3g"]
 [ext_resource type="Resource" uid="uid://0i72bf8ip1lx" path="res://src/world/spook_manager.tres" id="3_l0av5"]
-[ext_resource type="PackedScene" uid="uid://bov4ok76woyc" path="res://levels/ghost_ship/ghost_ship.tscn" id="4_5kmgb"]
+[ext_resource type="PackedScene" uid="uid://b8rv6dg4tgaeb" path="res://levels/mechanic_test/mechanic_test.tscn" id="4_5kmgb"]
 [ext_resource type="PackedScene" uid="uid://c0uitm5cg88h1" path="res://src/ui/menus/kill_screen/kill_screen.tscn" id="6_l0av5"]
 [ext_resource type="PackedScene" uid="uid://brknr57xc2cp0" path="res://src/ui/elements/save_icon/save_icon.tscn" id="7_5kmgb"]