I. Introduction
Nowadays multiple IoT healthcare devices are being used by hospital staff and patients. Over the years, Implantable Medical Devices (IMDs) and Implantable Cardiac Defibrillators (ICDs) have been adding wireless communication capabilities. But other IoT healthcare device has also been improving their interconnectivity and wireless communications technologies, like insulin pumps or mobile electrocardiographs. The patients can carry these small electrocardiographs where they can perform periodic electrocardiograms (ECGs) that will be sent to their corresponding medical specialist. These novel IoT devices facilitate monitoring and earlier diagnosis of patients, avoiding numerous hospital visits. Similar to other devices in the IoT industry, some of these devices are using proprietary protocols or involve new methods of communications. One of these new emerging communications technologies used for healthcare devices is known as data-over-sound.