nav4you is a spin-off of Geoloc Laboratory of the Gustave Eiffel University (formerly IFSTTAR) in France. It results from a desire to promote an innovative geolocation platform and its alsorithms designed since 2015. In 2021, for its first year of existence, nav4you won the Galileo Masters France, as well as the Space Tour relaunch plan. In 2022, the company is laureate in phase 1 and 2 of the First Responders Smart Tracking Challenge in USA. These successes have allowed initiating the development of the CHARLI project, dedicated to First Reposnders, while gaining visibility. For this, the company has established a partnership with a departmental fire and rescue centre (SDIS44) at the beginning of the year.