Telemetry of programmed and measured data is an important feature of many pacemakers currently used in clinical practice. The ability to receive non‐invasive data from the implanted device constitutes a major advantage for the long‐term follow‐up of the patients and of device performance. There are numerous types of data retrievable via telemetry: parameters of device characteristics (output, battery longevity, impedance, etc), event recorders or counters, event markers, and endocardial electrograms. Ideally, this information should be beneficial in the longitudinal surveilance of modern pacem