The invention relates to a method of cardiac monitoring, comprising (a) aiming, with a low angular precision, a non-imaging sensor at said heart to receive a signal from said heart (b) automatically identifying a spatially specific tissue in said heart by said sensor based on a signature pattern in said received signal (c) extracting of a value of a cardiac parameter associated with said specific tissue using a signal detected by said sensor (d) continuing cardiac monitoring by (i) receiving a further signal from said specific tissue (ii) identifying said specific tissue in said further signal and (iii) extracting a further value of said cardiac parameter from a signal detected by said sensor and (e) repeating (d) for at least 10 minutes.
