| What3Words is a horrible idea. It's primary use is as a rent extraction device for its owners, if they can gain sufficient market share. It is utterly useless without their app, uses a non-universal language (English vs math) and provides zero information about geography. The 3-word identification strings provide not the slightest clue whether two identified points are corners of the same building or literally on opposite sides of the planet (vs LatLong making it obvious that e.g., 42.36N 71.31W is relatively near 41.92N 71.48W). It provides zero value to anyone trying to actually navigate, without using their app, and if you are going to navigate with an app, why not use any implementation of OpenStreetMap, or even the nearly ubiquitous Google or Apple maps? Hell, we're even better off with old paper postal maps than this scheme. A slight about of temporary convenience for innumerate people is no good reason to implement a rent-extractive proprietary system. |
In contrast, Google’s plus codes(https://plus.codes/) provide the same functionality but avoid the most of the pitfalls you mention.
If you wanted to encode the same data using words instead of alphanumeric characters (which is a debatable goal), then you could just combine it with WCodes (https://wcodes.org/)