diff --git a/edit_data_form.py b/edit_data_form.py
index 0e43d3e..68ab61a 100755
--- a/edit_data_form.py
+++ b/edit_data_form.py
@@ -10,6 +10,7 @@ import pathlib
 from base_data_model import base_data_model
 from financial_data_model import financial_data_model
 from membership_data_model import membership_data_model
+from id import new_id
 
 
 class FormApp(npyscreen.NPSAppManaged):
@@ -38,6 +39,10 @@ class FormApp(npyscreen.NPSAppManaged):
         data_dict['finanzdaten'] = self.financial_data.get_form_values_dict()
         data_dict['mitgliederdaten'] = self.membership_data.get_form_values_dict()
         data_dict['timestamp'] = datetime.datetime.now().replace(microsecond=0).isoformat()
+        try:
+            data_dict['id'] = self.member['id']
+        except KeyError:
+            data_dict['id'] = new_id()
         return data_dict
 
     def data_has_changed(self):
diff --git a/id.py b/id.py
new file mode 100644
index 0000000..1d4a122
--- /dev/null
+++ b/id.py
@@ -0,0 +1,7 @@
+import datetime
+import hashlib
+
+def new_id():
+    h = hashlib.md5()
+    h.update(datetime.datetime.now().isoformat().encode())
+    return h.hexdigest()[-5:]
\ No newline at end of file