Location-based services are an important aspect of living, as these not only provide time benefits but also save a lot of energy. With the increase in complex building structures, people of different ages may find it difficult to navigate within such structures. When we say different age groups, it includes the age groups from little ones who don’t understand directions to the older ones who are in an urge to find places early due to getting drained out easily. Indoor navigation is not only an asset to sighted people but for the impaired ones too. Indoor navigation when integrated with voice assistants allows the impaired people to navigate hassle-free. For this, an Indoor navigation system is required which localizes the user, takes the account of their current location, and then corresponding to the destination point, guides the user through the path. The literature survey takes into account the different localization approaches considered by different researchers in indoor localization and the necessary positioning algorithms to reach the destination for the paths. This paper also reviews the plus points and limitations of the research work that has been done in Localization and Pathfinding algorithms.