diff --git a/db.py b/db.py
index 58ef380..fabca04 100644
--- a/db.py
+++ b/db.py
@@ -41,7 +41,7 @@ class DataBase():
                      [rpm, device_id], commit=True)
 
     def get_all_cadences(self, device_id):
-        return self.execute('SELECT * FROM cadence WHERE device_id = %s', [device_id])
+        return self.execute("""SELECT LOGGED_AT, RPM FROM cadence WHERE device_id = %s AND (NOW() < (LOGGED_AT + (INTERVAL '12 hour')))""", [device_id])
 
     def get_devices(self):
         return self.execute("""