Aw man. The few Hackathons I was a participant was the same thing. 'We may ask for you code', they never did :(. We had one of the few operational products wherein everyone showed point-and-click slide demos. Was a bummer.
Better luck next time. Your solution is inventive and impressive.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.