Firefighters are urging islanders to download an app on to their phones in case they need help in an emergency.
The Jersey Fire and Rescue Service said What3Words (W3W) would enable people to give emergency workers their precise location if needed.
The free app uses a grid system that has divided the world up into three-by-three-metre squares, each of which has a unique three-word address.
A spokesperson for the fire service said: "If you download What3Words, you'll be ready to give us an exact location if you run into trouble."