BibTeX:

@article{IJIRSTV1I8040,
     title={Finding indoor position of person using wi-fi & smartphone:A survey},
     author={Pooja U. Barwal, Gajanan D. Bonde, Kiran P. Ablankar, Sandhya Pal and Sumaiya I. Khan},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={8},
     pages={202--207},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I8040.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Positioning system can be used for different purposes and for different services, so a lot of research is going on to find a more accurate position with low error techniques with good results. The Positioning techniques have been actively studied recently due to service as well as safety and security matters. Global Positioning System (GPS) is more widely used for outdoor but GPS is not suitable for indoor . There are many localization systems with different architectures, configurations, accuracies and reliabilities Wi-Fi Positioning system (WPS) solves this problem. Here we find out position with the help of Wi-Fi signal strength. We also discuss location fingerprinting in detail since it is used in most current system or solutions. A small program installed on to calculate the position. This will help in many applications for mobile users and network administrators. It will make use of existing Wi-Fi infrastructure, although Wi-Fi system was never designed to find out the location. The smart device regularly scans the signal strengths for surrounding Wi-Fi access points and send information to a central server. This paper try to survey the recent work related to indoor positioning system.

Wi-Fi Signal Propagation, Wi-Fi-Based Localization, Location Fingerprinting, GPS