There is provided a method for measuring heart activity of a person in a single-use electrode patch, the method comprising: measuring the heart activity of the person； displaying the heart activity of the person on the basis of the measuring the heart activity； and broadcasting at least one message enabling transfer of heart activity data indicating the heart activity of the person from the electrode patch to the one or more external devices, wherein the broadcasting is performed while the heart activity of the person is being measured and displayed by the electrode patch.
