What3words: The app that can save your life

Extreme scepticism: https://news.ycombinator.com/item?id=20704017

Personally, I think that W3W is a really, really bad system to solve a probably real problem.

Other submissions of this puff piece:

https://news.ycombinator.com/item?id=20723965

https://news.ycombinator.com/item?id=20706030