Some examples of how people use what3words are: telling friends exactly where to meet, easily entering a precise destination into a ride-hailing app, and giving their precise location over the phone to emergency services.
Businesses in travel, mobility and logistics, as well as some emergency response teams, use what3words to operate more efficiently and provide a better service
You can find handy step-by-step instructions on how to use the what3words app here: http://what3words.com/how-to-use-the-what3words-app