Abstract: System and method to localise an entity are provided. The system includes one or more sensors communicatively coupled to the entity, configured to sense a plurality of data representative of the location of the entity within the indoor environment, a processing subsystem communicatively coupled to the one or more sensors. The processing subsystem includes a raw data collection module configured to generate raw data representative of a plurality of locations within the indoor environment, wherein the raw data is collected by the one or more sensors and to create a floor map of the indoor environment based on the raw data generated, a computing module configured to compare the plurality of data sensed by the corresponding one or more sensors with the raw data using a computing technique, a location monitoring module configured to compute a location of the entity within the indoor environment based on a compared result.