This document describes an Android-based mobile application called the WIFI Based Library Book Locator that helps users locate books within a library. The application connects to a local server in the library via WIFI and provides the user with the precise location of a book along with a path to find it. It also allows users to check the status of multiple books. The system uses a 3-tier architecture with a database layer to store book information, an application layer to handle navigation and data flow, and a network layer to connect via WIFI. It provides a simple interface for users to search for books and view their locations.