diff --git a/src/data_entry_panel.py b/src/data_entry_panel.py
index b26fc25..e47153f 100644
--- a/src/data_entry_panel.py
+++ b/src/data_entry_panel.py
@@ -48,5 +48,19 @@ class DataEntryPanel(Gtk.VBox):
 
       return
 
+   def enable(self):
+      # Activates all text boxes and the "Store data" button
+      keys = self.sources.keys()
+      for i in range(0, len(keys)):
+         self.sources[keys[i]].set_property("editable", True)
+         self.sources[keys[i]].set_can_focus(True)
+      self.store.set_sensitive(True)
 
+   def disable(self):
+      # Deactivates all text boxes and the "Store data" button
+      keys = self.sources.keys()
+      for i in range(0, len(keys)):
+         self.sources[keys[i]].set_property("editable", False)
+         self.sources[keys[i]].set_can_focus(False)
+      self.store.set_sensitive(False)
 
diff --git a/src/pyqso.py b/src/pyqso.py
index fe61250..16e42f8 100644
--- a/src/pyqso.py
+++ b/src/pyqso.py
@@ -55,6 +55,7 @@ class PyQSO(Gtk.Window):
       vbox_outer.pack_start(hbox, True, True, 0)
       
       self.data_entry_panel = DataEntryPanel(self, hbox)
+      self.data_entry_panel.disable()
 
       # Render the logbook
       self.treeview = Gtk.TreeView(self.logbook)