Sadly, privacy is quickly going the way of the dodo. This is painfully obvious when you realise that very few people are standing up for the right to privacy, while many powerful corporations and government agencies are pushing with all their might to expand their already considerable powers. These entities all operate in their own self-interest, so for example the people working at Google are not pleased with the NSA messing with their networks, but none of them care about your privacy.

It also doesn't help that technological advancement seems to have an anti-privacy bias. Video resolution is getting better, computers can process information faster and faster, data storage is cheaper than ever, etc; new and improved algorithms mean higher rates of success for facial recognition and gait analysis; entirely new technologies might make it possible to see you even without having to actually see you.

The last frontier, of course, is the brain. Scientists can already sort of guess what you're thinking or dreaming about by scanning your brain waves, but the technique is still primitive and as far as I know it hasn't been shown to work outside of the laboratory. Governments are very interested in figuring out how the brain works, obviously for humanitarian reasons!

In addition, it may be possible—and tempting—to exploit for strategic­-political purposes the fruits of research on the brain and on human behavior. Gordon J. F. MacDonald, a geophysicist specializing in problems of warfare, has written that accurately timed, artificially excited electronic strokes "could lead to a pattern of oscillations that produce relatively high power levels over certain regions of the earth. ... In this way, one could develop a system that would seriously impair the brain performance of very large populations in selected regions over an extended period. . . . No matter how deeply disturbing the thought of using the environment to manipulate behavior for national advantages to some, the technology permitting such use will very probably develop within the next few decades."

The above quote comes from the book "Between Two Ages", written in 1970 by Zbigniew Brzezisnki, an American political scientist, geostrategist, and statesman who served as a counselor to Lyndon B. Johnson from 1966–1968 and held the position of United States National Security Advisor to President Jimmy Carter from 1977 to 1981. Also co-founder of the Trilateral Commission with David Rockefeller. What a guy!

Encryption won't save us this time.