Interface of this project reminds me on dreadful google captchas (that we are all tired from), but it could be useful for storing smaller amount of coins aka for pocket wallet.
Even on his github page he is saiyng that this method is less secure than generating regular seed phrases, but I have to admit that using phots is real simple way of doing it.
Problem I see with this approach is that some AI program could possible crack this much easier than normal seed words, using some photo recognition software.

My question is could you actually use custom made photo(s) that you could print and hang on your wallet as a piece of art in obvious place, but that art would hide bitcoin inside?
Scanning photo(s) would give you access to your keys, and you could even make mini printed version and keep it in your wallet, for international travels.