Internet of Things (IoT) is System of interconnected devices , mechanical and digital machines , objects , animal or people that are provided unique identifiers and ability to transfer data over the network without requiring human-to-human and human-to-computer interconnection.
The ‘thing’ in IoT could be a person with a heart monitor or an automobile with built-in-sensors, i.e. objects that have been assigned an IP address and have the ability to collect and transfer data over a network without manual assistance or intervention.
IOT notes by Parita 