AF is the cause of a sizeable amount of strokes (15% of all, and more than 35% of the population over 80 years of age), which can be prevented through anticoagulation treatment if provided in time. Thus, many patients are referred to cardiologic ambulatory to be examined for AF, and are subjected to heart monitoring with a so-called Holter or event monitor. This entails the patient be equipped with several electrodes on the chest, to which leads are attached and connected to a sizable and bulky box. The patient carries this box around hanging from the shoulder, belt or something similar for one or several days. It is then required of the patient to come back and deliver the device, after which the data must be read and analysed, in order to work out a further plan for the patient. During admission, a similar system can be attached for continuous heart monitoring.