SUMMARY
Whenever People visit some places like hospitals, museums, and colleges they find difficult to navigate to a particular location. Using GPS for indoor navigation is not possible because GPS-enabled smartphones have accuracy within a 4.9 m (16 ft.) radius in an outdoor environment. Their accuracy reduces near trees, buildings, and bridges. Sometimes these places provide a 2D static map for navigation but it is difficult to interpret. This paper surveys on indoor navigation techniques. There are different are techniques available such as Wi-Fi-based, Bluetooth Beacon and Augmented reality-based techniques. This paper provides a study of different indoor navigation techniques.