Written informed consent for pacemaker and ICD patients should be easy to understand and provided in written form in the patient's language. Comprehensiveness is required. It is essential to address driving and running machines, complication rates, benefits in appropriate hierarchical order and future necessary interventions. Eventually potential risks, e.g., flying, sports, sexual activity should be mentioned. It is important to explain pacemaker systems and ICD devices in details including cardiac resynchronization therapy (CRT) for heart failure. One of the main aspects concerns protection of human subjects participating in clinical studies. Informed consent necessitates a statement that the study involves research. This statement should include explanation of the purposes of the study, expected duration, description of the procedures, identification of experimental procedures, description of foreseeable risks or discomforts, and disclosure of alternative procedures. Further information should be given on psychological concerns, sexual activity, driving and quality of life in pacemaker and ICD patients.