Based on the readme it seems to need training data, so assuming you train it with the same layout you want to use later to capture from. i don't see why it wouldn't work.
It does not require training data - instead it uses statistical information about the frequencies of the letters and n-grams in the English language.
and from this it should also be noted that it won't apparently be able to extract passwords, as least those which aren't "n-grams in the English language".