Interesting. Seems they are using it in other states for location services.
The traditional cut and paste of grid coordinates or typing in address.
This seems pretty niche for all the other areas where repeating a long string of numbers to someone else may be less advantageous to just saying and repeating 3 random words.
Just playing with app now.
Scenario - calling in indirect support has become 3 word grid coordinates… lol
Find your 3 word address with
https://app.what3words.com/download