diff --git a/core/src/com/dungeoncrawler/model/Inventory.java b/core/src/com/dungeoncrawler/model/Inventory.java
index 59b7b70..c4946d1 100644
--- a/core/src/com/dungeoncrawler/model/Inventory.java
+++ b/core/src/com/dungeoncrawler/model/Inventory.java
@@ -1,5 +1,7 @@
 package com.dungeoncrawler.model;
 
+import com.dungeoncrawler.model.items.Key;
+
 
 public class Inventory {
     
@@ -54,11 +56,21 @@ public class Inventory {
     }
     
     public boolean checkKey(){
+        for(int i = 0; i < items.length; i++){
+            if(items[i].getId() == 0){
+                return true;
+            }
+        }
         return false;
     }
     
     public void deleteKey(){
-        
+        for(int i = 0; i < items.length; i++){
+            if(items[i].getId() == 0){
+                items[i] = null;
+                i = items.length + 1;
+            }
+        }
     }
     
     
diff --git a/core/src/com/dungeoncrawler/model/entities/Player.java b/core/src/com/dungeoncrawler/model/entities/Player.java
index da2aa8b..864eb03 100644
--- a/core/src/com/dungeoncrawler/model/entities/Player.java
+++ b/core/src/com/dungeoncrawler/model/entities/Player.java
@@ -83,4 +83,12 @@ public class Player extends Entity {
         return a;
     }
     
+    public boolean checkKey(){
+        return inv.checkKey();
+    }
+    
+    public void deleteKey(){
+        inv.deleteKey();
+    }
+    
 }