Video Duration 02 minutes 33 seconds

New mobile app helps rescue four people from blizzard in Scotland

The app divides up the globe into three-metre squares and gives each specific location three random words.

Four people were rescued from a blizzard on Scotland’s highest mountain earlier this week – thanks to a free mobile phone app.

It is called What 3 Words – a new system to identify people’s exact locations.

Al Jazeera’s Jessica Baldwin reports from Pembury, England.