Patients taking part in a telemonitoring program generally need to measure various vital-signs parameterson a daily basis in accordance with a specified procedure in order to treat their condition optimally. These measurements, sometimes including the electrocardiogram (ECG), blood pressure, weight and/or oxygensaturation, must be recorded by the patients themselves in their own home environment and transferredto the patient‘s doctor or a telemonitoring centre. When transferring such medical data, high standards governing data security and reliability must be adhered to.