Physiological monitoring can be provided through a wearable monitor that includes two components, a flexible extended wear electrode patch and a removable reusable monitor recorder. The wearable monitor sits centrally on the patient's chest along the sternum oriented top-to-bottom. The placement of the wearable monitor in a location at the sternal midline (or immediately to either side of the sternum) benefits extended wear by removing the requirement that ECG electrodes be continually placed in the same spots on the skin throughout the monitoring period. The wearable monitor can interoperate wirelessly with other physiology and activity sensors and mobile devices. An application executed by the sensor or device can trigger the dispatch of a wearable monitor to the patient upon detecting potentially medically-significant events. The dispatched wearable monitor would then be capable of providing precise medically-actionable data, not merely an alert that some abnormality may be present. The patient can then use the sensor or device to physically record the placement and use of the medically-actionable wearable monitor, thereby facilitating the authentication of the data recorded.