A method for monitoring electrocardiographic activity of a person, the method comprises: performing a first set of alignment iterations for aligning a monitoring device with an electrical heart axis of the person; wherein each alignment iteration of the first set comprises: receiving, by a computerized control unit, electrocardiographic signals sensed by the monitoring device while the monitoring device is positioned at certain orientation while being detachably coupled to a chest of the person; determining, by the computerized control unit and based upon the electrocardiographic signals, whether the monitoring device is aligned with the electrical heart axis of the person; wherein the determining is responsive to amplitudes of a P wave sensed by the monitoring device and a ratio between amplitudes of a T wave sensed by the monitoring device and an R wave sensed by the monitoring device; wherein when determining that the monitoring device is aligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of an alignment indicator to the person; and wherein when determining that the monitoring device is misaligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of a request to change, by the person, an alignment of the monitoring device. performing a first set of alignment iterations for aligning a monitoring device with an electrical heart axis of the person; wherein each alignment iteration of the first set comprises: receiving, by a computerized control unit, electrocardiographic signals sensed by the monitoring device while the monitoring device is positioned at certain orientation while being detachably coupled to a chest of the person; determining, by the computerized control unit and based upon the electrocardiographic signals, whether the monitoring device is aligned with the electrical heart axis of the person; receiving, by a computerized control unit, electrocardiographic signals sensed by the monitoring device while the monitoring device is positioned at certain orientation while being detachably coupled to a chest of the person; determining, by the computerized control unit and based upon the electrocardiographic signals, whether the monitoring device is aligned with the electrical heart axis of the person; wherein the determining is responsive to amplitudes of a P wave sensed by the monitoring device and a ratio between amplitudes of a T wave sensed by the monitoring device and an R wave sensed by the monitoring device; wherein when determining that the monitoring device is aligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of an alignment indicator to the person; and wherein when determining that the monitoring device is misaligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of a request to change, by the person, an alignment of the monitoring device. wherein when determining that the monitoring device is aligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of an alignment indicator to the person; and wherein when determining that the monitoring device is misaligned with the electrical heart axis then assisting, by the computerized control unit, in a provision of a request to change, by the person, an alignment of the monitoring device. <EOS>