I think a key difference to what 3 words is that this just requires a lookup table/algorithm, as opposed to a web service; i.e. plus codes can be used offline.
That said, I’m disappointed that there is no error correction/detection built in, as humans are bad a transcribing this sort of thing, particularly where English isn’t the language, and/or Latin isn’t the script. It’s nice they don’t allow similar looking characters O/0 1/I or swear words (in fact, looking at the code, it looks like they trimmed the allowable characters to prevent most words - this is what you have to work with: 23456789CFGHJMPQRVWX), but that’s not the be-all and end-all; if a typist swaps two characters, then the location is wrong.
