Described is an apparatus for sensing and processing electrical cardiac signals in a users body, the apparatus comprising a contact surface having a plurality of electrical signal sensing electrodes associated with an electronic processing circuit and communication unit. The apparatus is configured for sensing electrical signals and is arranged within a single housing. It is configured to perform complete ECG bipolar, unipolar and unipolar precordial leads by at least four associations of the apparatus with the subjects skin. Also described is a method of remote sensing and processing of electrical cardiac signals which, via the apparatus, enables a lay user, or even the patient, to obtain the patients heart signals.