Precise memorable addresses

What3Words divides the world into 3 x 3-meter squares and gives each square a unique, unalterable sequence of three random words. For instance the location of my writing desk is “smile.rocket.gates”. This global address is really handy for sending a delivery person to the right part of a building, or meeting someone on at trail head, or locating a home in the large parts of the developing world that have no operational address. It’s better than a lat/long sequence because you can remember it. Works in multiple languages. The phone app version integrates into Google maps, etc. — KK