The AirKey online administration comes with a matching AirKey app. This is available free of charge for Android phones (Version 4.0.0 and higher). Once the app has been downloaded and the registration code entered, your mobile phone is transformed into a key. The AirKey app locks cylinders, updates the AirKey cylinder and AirKey identification media and stores status data, which is transmitted during the next contact with online administration.
The AirKey app can be used in as many master key systems as desired.