The app uses GPS to tell which impact zone you are in.  Each impact zone will have it's own Emrals address and be funded by donations through subscriptions and masternodes.  Using the app, the person cleaning up will then take a picture of the trash they are about to cleanup and then a picture of it being thrown out.  They will then get the reward of x amount of coins depending on how much funding the neighborhood has.   Additionally, on the eCan, when an item has a barcode scan or is identified either by Ai or the human, they will get EMRALS depending on the value of the item being thrown out.