Application intended for volunteer health professionals wishing to participate in a first-aid system. If someone in your neighborhood calls for help from professional rescuers, you'll be able to help him before he gets a rescue car. Your application automatically alerts you to the occurrence of a sudden cardiac arrest in your neighborhood. If you choose to accept the challenge, the application will start navigating you to the patient. At the same time, the dispatching center is informed about the reception of the call, which also informs you about the arrival of the emergency call. Please contact the appropriate rescue service to join the system.