  In fact, information systems are the foundation of new productivity sources,
medical organizational forms, and erection of a global economy. IoT based
healthcare systems play a significant role in ICT and have contribution in
growth of medical information systems, which are underpinning of recent medical
and economic development strategies. However, to take advantages of IoT, it is
essential that medical enterprises and community should trust the IoT systems
in terms of performance, security, privacy, reliability and
return-on-investment, which are open challenges of current IoT systems. For
heightening of healthcare system; tracking, tracing and monitoring of patients
and medical objects are more essential. But due to the inadequate healthcare
situation, medical environment, medical technologies and the unique
requirements of some healthcare applications, the obtainable tools cannot meet
them accurately. The tracking, tracing and monitoring of patients and
healthcare actors activities in healthcare system are challenging research
directions for IoT researchers. State-of-the-art IoT based healthcare system
should be developed which ensure the safety of patients and other healthcare
activities. With this manuscript, we elaborate the essential role of IoT in
healthcare systems; immense prospects of Internet of things in healthcare
systems; extensive aspect of the use of IoT is dissimilar among different
healthcare components and finally the participation of IoT between the useful
research and present realistic applications. IoT and few other modern
technologies are still in underpinning stage; mainly in the healthcare system.
