Making it into a game the key in doing this is: If people have played Farmville or Candy Crush or things like that on FB, if you add a countdown timer and a progress bar and badges people will do whatever you want. They will spend the whole night digitizing those single cells as long as it takes them only five seconds and they get an instant reward “Thank you for saving the country”. Also it would mention: You know thousands of people are playing like you. We had designers who designed everything very prettily.