As technologies grow, our life is becoming less and less private, many little thing could revealnour trace, our habits. With a little help of big data technology, our habits and even future acts could be predicted!! Those drones are double edged blades, could help us against terrorist but also can jeopardise normal civilian privacy for any reasons!! But lucky the growth of cryptocurrency in some sense could help us civilians gain back some grounds in holding on to the little privacy that we have!! Great post sharing!! Steem on