Thanks to everyone for the kind words of support.

If I understand your system right it's that somebody works out and simultaneously earns tokens or even for any activity during the day. Couldn't someone fake activity very easily? What kind of metrics will you apply, is it heartbeat for example? Even then couldn't you fake that somehow?
The heart rate sensor plays an important role, but not the most important one. I can't tell how we will check fake activity, it's hard, but real. Don't worry, we know how to solve this problem.
