The application that the IoT currently has in the medical industry, specifically in the devices that are used. We will speak from the point of view of the opportunities and challenges because, despite the fact that the IoT has enormous potential, there are still many aspects to be improved to make this field as effective as it is safe. In this first part, we will focus on the opportunities that the IoT has in medicine. The Internet of Medical Things (IoT) refers to the interconnected system of medical devices and applications that collect data and then provide it to health care IT systems through online networks. Currently, there are 3.7 million medical devices in use that are connected and monitor various parts of the body to inform health decisions. Several reasons may explain the increasing adoption of IoMT. One of them is the growing presence of NFC technology in mobile devices such as smartphones, as well as the expansion and access to high-speed Internet. We will talk