A method, an electronic device, a system and an information storage medium for practicing and/or controlling an inhalation process of a patient. The method involves quantifying an airflow in a mouthpiece of an inhaler during an inhalation process of the patient using an inhalation training device, evaluating an airflow signal received from the inhalation training device via an electronic device and providing visual feedback to the patient with the electronic device, the visual feedback varying with one or more time-variant characteristics of the evaluated airflow signal. The electronic device is configured for evaluation of an airflow signal received from an inhalation training device and for provision of visual feedback to the patient, the visual feedback varying with one or more time-variant characteristics of the evaluated signal. The inhalation training system comprises an inhalation training device, an inhaler and the electronic device.
