diff --git a/app.py b/app.py
index 84d4ed2..c47d513 100755
--- a/app.py
+++ b/app.py
@@ -36,8 +36,17 @@ def inject_stage_and_region():
     return dict(calibration=get_calibration(conn), CalibrationState=db.CalibrationState)
 
 
+@app.before_request
+def manage_auto_use_last_calibration():
+    if config.AUTO_USE_LAST_CALIBRATION and 'calibration_id' not in session:
+        conn = db.get()
+        last = db.Calibration.get_last(conn)
+        if last is not None:
+            session['calibration_id'] = last.id
+
+
 @app.route("/")
-def hello_world():
+def index():
     conn = db.get()
     objects = db.Object.all(conn)
     return render_template('index.html', objects=objects)
diff --git a/config.py b/config.py
index b43f359..3947dac 100644
--- a/config.py
+++ b/config.py
@@ -5,7 +5,8 @@ BACKUPS_DIR = 'data-backups'
 CALIBRATION_DIR = join(DATA_DIR, 'calibrations')
 OBJECT_DIR = join(DATA_DIR, 'objects')
 DATABASE_PATH = join(DATA_DIR, 'db.sqlite')
-SECRET_KEY = 'tobedefined'
+
+AUTO_USE_LAST_CALIBRATION = False
 
 LEDS_UUIDS = [
     'ac59350e-3787-46d2-88fa-743c1d34fe86',