APPLICATION OF IOT BLOCK CHAIN IN INFORMATION TECHNOLOGY

Internet of Things is an emerging and growing technology in the field of information technology. It is the actualization of the ideology connecting the things to internet. The ‘Things' refers to any physical objects which are uniquely addressable by standard communication protocol , can be identified by a RFID tag and be monitored from remote places or any electronic devices with sensors that can access the information's from the surroundings . This information's can be stored in a central server and can be analyzed and processed by smart applications. It is a technological revolution in this era which brings all the virtual and physical objects integrated into the existing network architectures so that they can connect with each other dynamically, anytime and anywhere, without the direct human interference. However, the IoT applications, has the drawbacks in some areas such as privacy and security of personal information's gathered by IoT devices. This can be overcome by integrating IoT with block chain technology. By applying encryption algorithms blockchain protects, save and transmit these information's over the network. The main objective of this paper is to review the studies conducted in the application domains where the indefinite scope of IoT block chain seamlessly applies .As the application domain is very vast, this review paper focus mainly on the popular application domains such as crypto currency, industrial &manufacturing applications and smart health care.