A free app, that can help save yours or someone else’s life in an emergency. I have no involvement in this, no financial input or any other connection but I feel we should all use this as it can save lives by helping emergency services pinpoint out location, to aid those in emergency need, the quickest and most effectively. The information below, is from their site and all rights to the information and are property of ThreeWords. 

The simplest way to talk about location

Street addresses weren’t designed for 2020. They aren’t accurate enough to specify precise locations, such as building entrances, and don’t exist for parks and many rural areas.
This makes it hard to find places and prevents people from describing exactly where help is needed in an emergency.

That’s why they created what3words.

Every 3 metre square of the world has been given a unique combination of three words. Used for e-commerce and delivery, navigation, emergencies and more.

What3words essentially points to a very specific location. Its developers divided the world into 57 trillion squares, each measuring 3m by 3m (10ft by 10ft) and each having a unique, randomly assigned three–word address.

You simply open the WhatThreeWords app, and it automatically provides the three words that identify the location you are in. This can be shared to others to see where you are, or provided to the Emergency Services who can use the service to pinpoint you. It is a great safe guard to use for hill walking, climbing etc, where you are in remote places, and possibilities of difficulty may arise, regardless of how little it seems possible. Simply download onto your phone and have the backup if you ever need it.