The system was developed by What3words, which has divided the planet into 57 trillion 3-meter-by-3-meter squares, assigning each square a random three-word address. Three words define where you are within a 3m square. This could help you in case of emergency if you are to contact many (but not all) blue light services. You can share the 3 words but cannot integrate this with many apps - Google maps for example.