I haven't used this and I hadn't heard of it until yesterday. From what it says in that article it sounds like a very good idea. The main difficulty I can see is whether or not a phone signal is available. In rural areas particularly this can be a problem.
What3words is about to make millions of car satnavs more accurate and easier to use November 5, 2020 https://thenextweb.com/shift/2020/1...-car-satnavs-more-accurate-and-easier-to-use/ TechCrunch: Here integrates what3words’ super simple address system into its in-car API (October 22, 2020)