I'll keep this disclosure in mind when it comes across my desk. But now you've got no chance of patenting it yourself, so touch luck =).
My thinking is that I've created prior art that would make the idea much much harder to patent. Not a patent lawyer, so may be wrong.
As for how harmful it was for my anonymity to mention Sydney - well, NSA knows way more than that. Besides, I could be sending you all down the wrong trail. or better - confusing a ML algorithm.