Abstract
Now a day’s Internet of things is hot topic and fast growing field. IoT is a sort of “universal global neural network” in the cloud whichconnects various things. It's a new paradigm that has changed the traditional way of living into a high tech life style. The IoT is intelligently connected devices and systems which comprised of smart machines interacting and communicating with other machines, environments, objects and infrastructures and the Radio Frequency Identification (RFID) and sensor network technologies will rise to meet this new challenge. In each and every organization to send information about the people in which we use emails and websites but in most of countries internet access is available for transferring information to people via mobile and on systems which is easier, fast and less cost through internet. You can book tickets, banking, check the traffic, clear your dues, get certificates from the municipality etc. Because of heterogeneity nature of devices there are many issues in IoT like coordination and control, data management, scalability, interoperability, security.
Keywords: Internet of things, Wireless network, Radio frequency identification, Challenges, Security, Privacy, IoT Threats, IoT Technologies, IoT architecture.