Today's world deal with different technologies. Consider the devices used as things and try to from a network of these devices such that these use internet and from internet if it is possible to connect these devices so that they can interact with each other then the devices as things and the the networking of things as Internet of things. so a formal definition can be loT is the networking of everyday objects which interact to each other and also connected to the internet. Many smart applications which support and simplify everyday life can be enabled by the loT. Normally the things are connected by cloud. Due to special requirements, the design of loT module is very complex and is a great challenge in research. The loT system is required to connect large amount of things to the cloud system. Therefore an open API should also be provided for easy data access and interoperability. As a result, loT system can be accessed and controlled from anywhere and anytime using any device, one of which is Smartphone.

1. Luigi Atzori, Antonio lera, Giacomo Mo­rabito. The Internet of Things: A survey,Computer Networks, Volume 54, Issue 15, 2010, pp. 2787-2805.
2. A IEEE INTERNET OF THINGS JOURNAL, VOL. 2,NO. 3, JUNE 2015 Friendship Selection in the Social Internet of Things: Challenges and Possible Strategies Michele Nitti, Luigi Atzori, and Irena Pletikosa Cvijikj
3. From the Internet of Computers to the Internet of Things Friedemann Mattern and Christian Floerkemeier Distributed Systems Group, Institute for Pervasive Computing, ETH Zurich {mattern,floerkem}@inf. ethz. ch
4. Mattern, F. , Floerkemeier, C. : Vom Internet der Computer zum Internet der Dinge. Informatik- Spektrum 33(2):107–121 (2010)
5. S Floerkemeier, C. , Langheinrich, M. , Fleisch, E. Mattern, F. , Sarma, S. E. : (eds. ) The Internet of things First International Conference, IOT 2008, LNCS 4952 Springer (2008)
6. Frank C. , Bolliger, P. , Mattern, F. , Kellerer, W. : The Sensor Internet at Work: Locating Everyday Items Using Mobile Phones. Pervasive and Mobile Computing (3):421–447 (2008)
7. L Atzori, A. Iera, and G. Morabito, "From 'Smart Objects to'Social Objects': The Next Evolutionary Step of the internet of Things ," IEEE Comm. , vol. 52, no. 1, 2014, pp. 97–105
8. A Zanella, N. Bui, A. Castellani, L. Vangelista, and M. Zorzi, ``Internet of Things for smart cities,'' IEEE Internet Things J. , vol. 1, no. 1, pp. 22_32, Feb. 2014.
9. Trust Management Mechanism for Internet of Things by GU Lizet, WANG JingpeP, SUN Bin
10. 2014 1st International Conference on Information Technology, Computer and Electrical Engineering (ICITACEE) Challenges and Opportunities in Designing Internet of Things by Trio Adiono
11. Future Internet Assembly, "European Future Internet portal. "[Online]. Available: http://www. future-internet. eu/
12. ABIresearch News. 2014. The Internet of Things Will Drive Wireless Connected Devices to 40. 9 Billion in 2020 [Online]. Available: http:// Iwww. abiresearch. com/press/the-intern et –ofthings-will-drive-wireless-connect
13. Improving Heterogeneous SOA-Based IoT Message Stability by Shortest Processing Time Scheduling, Jenq-Shiou Leu, Member, IEEE, Chi-Feng Chen, and Kun-Che Hsu IEEE TRANSACTIONS ON SERVICES COMPUTING, VOL. 7, NO. 4, OCTOBER-DECEMBER 2014
14. Building trust in the Human-Internet-of-Things Relationships IOANNIS KOUNELIS, GIANMARCO BALDINI, RICARDO NEISSE, GARY STERI, MARIACHIARA TALLACCHINI, AND ÂNGELA GUIMARÃES PEREIRA , IEEE TECHNOLOGY AND SOCIETY MAGAZINE | WINTER 2014 1932-4529/14

Iot Systems siot.