If I found something like that, I do not know if it was the same or it was another, it still exists, I also knew and used a cryptomoneda that was shaking the mobile was to go to do sports with the mobil in hand and every time the mobil noticed with the sensors the mobimiento added a few coins (that was the special form of mining that I had) are very interesting ways to mine without using electric power, also as steemit where we write when we are mining.