Show HN: Fitness Camera – turn your phone's camera into a fitness tracker

One of those ideas i never got to :) what's your plan with this?

That's a great idea! I have thought about it and planned to build some kind of betting game: everyone pays $10 on day 0 (let's say 1k users) and camera proves that you are doing exercises. On day 30 $10k ($10*1k) is divided between everyone who is still active. Motivation tool.