diff --git a/libnymea/interfaces/accesscontrol.json b/libnymea/interfaces/accesscontrol.json
new file mode 100644
index 00000000..71b3b2da
--- /dev/null
+++ b/libnymea/interfaces/accesscontrol.json
@@ -0,0 +1,10 @@
+{
+    "events": [
+        {
+            "name": "accessGranted"
+        },
+        {
+            "name": "accessDenied"
+        }
+    ]
+}
diff --git a/libnymea/interfaces/fingerprintreader.json b/libnymea/interfaces/fingerprintreader.json
new file mode 100644
index 00000000..1d033339
--- /dev/null
+++ b/libnymea/interfaces/fingerprintreader.json
@@ -0,0 +1,3 @@
+{
+    "extends": "useraccesscontrol"
+}
diff --git a/libnymea/interfaces/interfaces.qrc b/libnymea/interfaces/interfaces.qrc
index af1628f1..8dfdddec 100644
--- a/libnymea/interfaces/interfaces.qrc
+++ b/libnymea/interfaces/interfaces.qrc
@@ -47,6 +47,9 @@
         <file>smartmeter.json</file>
         <file>extendedsmartmeterconsumer.json</file>
         <file>extendedsmartmeterproducer.json</file>
+        <file>accesscontrol.json</file>
+        <file>fingerprintreader.json</file>
+        <file>useraccesscontrol.json</file>
     </qresource>
     <qresource prefix="/"/>
 </RCC>
diff --git a/libnymea/interfaces/useraccesscontrol.json b/libnymea/interfaces/useraccesscontrol.json
new file mode 100644
index 00000000..fb75bd8d
--- /dev/null
+++ b/libnymea/interfaces/useraccesscontrol.json
@@ -0,0 +1,32 @@
+{
+    "extends": "accesscontrol",
+    "states": [
+        {
+            "name": "users",
+            "type": "QStringList"
+        }
+    ],
+    "events": [
+        {
+            "name": "accessGranted",
+            "params": [
+                {
+                    "name": "userId",
+                    "type": "QString"
+                }
+            ]
+        }
+    ],
+    "actions": [
+        {
+            "name": "addUser",
+            "params": [
+                {
+                    "name": "userId",
+                    "type": "QString"
+                }
+
+            ]
+        }
+    ]
+}