Avalanches can strike without warning, burying victims under mounds of snow. Many people are left injured under a layer of snow – and the longer it takes for rescuers to reach them, the more likely they are to die.
One French inventor – a keen skier himself – has come up with an app which could point rescuers in the right direction in a worst-case scenario. Now he and his business partner hope skiers and other mountain users will download it so they’re safer on the slopes.
Watch the video above to find out more.
Join 900,000+ Future fans by liking us on Facebook, or follow us on Twitter or Instagram.
If you liked this story, sign up for the weekly bbc.com features newsletter, called “If You Only Read 6 Things This Week”. A handpicked selection of stories from BBC Future, Culture, Capital, and Travel, delivered to your inbox every Friday.