Libraries have adopted information technology be that IT-enabled content development, content management tools, content access and delivery tools or long term presentation tools. Libraries are always in the fore front where the adoption and usage of new technologies are concerned. Internet of Things (IoT) is enabling objects to collect data and transfer the data over a network without human intervention by using internet, sensors, and RFID. It is being used in various fields and is still emerging. Various innovative solutions are created. This paper explores the concept of IoT, its historical background and its potential applications in libraries. Some of the challenges which will be faced by the library professional while implementing it are also discussed.