diff --git a/Pilz.Cryptography/IUniquieID.cs b/Pilz.Cryptography/IUniquieID.cs
new file mode 100644
index 0000000..dbfc87e
--- /dev/null
+++ b/Pilz.Cryptography/IUniquieID.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Pilz.Cryptography
+{
+    interface IUniquieID
+    {
+        bool HasID { get; }
+        string ID { get; }
+
+        void GenerateIfNull();
+        void Generate();
+    }
+}
diff --git a/Pilz.Cryptography/UniquieID.cs b/Pilz.Cryptography/UniquieID.cs
index 16efa58..6655afc 100644
--- a/Pilz.Cryptography/UniquieID.cs
+++ b/Pilz.Cryptography/UniquieID.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 
 namespace Pilz.Cryptography
 {
-    public class UniquieID<TargetType>
+    public class UniquieID<TargetType> : IUniquieID
     {
         private static int currentSimpleID = 0;